2 Copyright (C) 1996-1997 Id Software, Inc.
3 Copyright (C) 2002 Mathieu Olivier
4 Copyright (C) 2003 Ashley Rose Hale (LadyHavoc)
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 See the GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 // for secure rcon authentication
32 #define QWMASTER_PORT 27000
33 #define DPMASTER_PORT 27950
35 // note this defaults on for dedicated servers, off for listen servers
36 cvar_t sv_public = {CVAR_SERVER, "sv_public", "0", "1: advertises this server on the master server (so that players can find it in the server browser); 0: allow direct queries only; -1: do not respond to direct queries; -2: do not allow anyone to connect; -3: already block at getchallenge level"};
37 cvar_t sv_public_rejectreason = {CVAR_SERVER, "sv_public_rejectreason", "The server is closing.", "Rejection reason for connects when sv_public is -2"};
38 static cvar_t sv_heartbeatperiod = {CVAR_SERVER | CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"};
39 extern cvar_t sv_status_privacy;
41 static cvar_t sv_masters [] =
43 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_master1", "", "user-chosen master server 1"},
44 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_master2", "", "user-chosen master server 2"},
45 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_master3", "", "user-chosen master server 3"},
46 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_master4", "", "user-chosen master server 4"},
47 {CVAR_CLIENT | CVAR_SERVER, "sv_masterextra1", "dpmaster.deathmask.net", "dpmaster.deathmask.net - default master server 1 (admin: Willis)"}, // admin: Willis
48 {CVAR_CLIENT | CVAR_SERVER, "sv_masterextra2", "dpmaster.tchr.no", "dpmaster.tchr.no - default master server 2 (admin: tChr)"}, // admin: tChr
53 static cvar_t sv_qwmasters [] =
55 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_qwmaster1", "", "user-chosen qwmaster server 1"},
56 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_qwmaster2", "", "user-chosen qwmaster server 2"},
57 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_qwmaster3", "", "user-chosen qwmaster server 3"},
58 {CVAR_CLIENT | CVAR_SERVER | CVAR_SAVE, "sv_qwmaster4", "", "user-chosen qwmaster server 4"},
59 {CVAR_CLIENT | CVAR_SERVER, "sv_qwmasterextra1", "master.quakeservers.net:27000", "Global master server. (admin: unknown)"},
60 {CVAR_CLIENT | CVAR_SERVER, "sv_qwmasterextra2", "asgaard.morphos-team.net:27000", "Global master server. (admin: unknown)"},
61 {CVAR_CLIENT | CVAR_SERVER, "sv_qwmasterextra3", "qwmaster.ocrana.de:27000", "German master server. (admin: unknown)"},
62 {CVAR_CLIENT | CVAR_SERVER, "sv_qwmasterextra4", "qwmaster.fodquake.net:27000", "Global master server. (admin: unknown)"},
67 static double nextheartbeattime = 0;
71 static unsigned char cl_message_buf[NET_MAXMESSAGE];
72 static unsigned char sv_message_buf[NET_MAXMESSAGE];
73 char cl_readstring[MAX_INPUTLINE];
74 char sv_readstring[MAX_INPUTLINE];
76 cvar_t net_test = {CVAR_CLIENT | CVAR_SERVER, "net_test", "0", "internal development use only, leave it alone (usually does nothing anyway)"};
77 cvar_t net_usesizelimit = {CVAR_SERVER, "net_usesizelimit", "2", "use packet size limiting (0: never, 1: in non-CSQC mode, 2: always)"};
78 cvar_t net_burstreserve = {CVAR_SERVER, "net_burstreserve", "0.3", "how much of the burst time to reserve for packet size spikes"};
79 cvar_t net_messagetimeout = {CVAR_CLIENT | CVAR_SERVER, "net_messagetimeout","300", "drops players who have not sent any packets for this many seconds"};
80 cvar_t net_connecttimeout = {CVAR_CLIENT | CVAR_SERVER, "net_connecttimeout","15", "after requesting a connection, the client must reply within this many seconds or be dropped (cuts down on connect floods). Must be above 10 seconds."};
81 cvar_t net_connectfloodblockingtimeout = {CVAR_SERVER, "net_connectfloodblockingtimeout", "5", "when a connection packet is received, it will block all future connect packets from that IP address for this many seconds (cuts down on connect floods). Note that this does not include retries from the same IP; these are handled earlier and let in."};
82 cvar_t net_challengefloodblockingtimeout = {CVAR_SERVER, "net_challengefloodblockingtimeout", "0.5", "when a challenge packet is received, it will block all future challenge packets from that IP address for this many seconds (cuts down on challenge floods). DarkPlaces clients retry once per second, so this should be <= 1. Failure here may lead to connect attempts failing."};
83 cvar_t net_getstatusfloodblockingtimeout = {CVAR_SERVER, "net_getstatusfloodblockingtimeout", "1", "when a getstatus packet is received, it will block all future getstatus packets from that IP address for this many seconds (cuts down on getstatus floods). DarkPlaces retries every 4 seconds, and qstat retries once per second, so this should be <= 1. Failure here may lead to server not showing up in the server list."};
84 cvar_t net_sourceaddresscheck = {CVAR_CLIENT, "net_sourceaddresscheck", "1", "compare the source IP address for replies (more secure, may break some bad multihoming setups"};
85 cvar_t hostname = {CVAR_SERVER | CVAR_SAVE, "hostname", "UNNAMED", "server message to show in server browser"};
86 cvar_t developer_networking = {CVAR_CLIENT | CVAR_SERVER, "developer_networking", "0", "prints all received and sent packets (recommended only for debugging)"};
88 cvar_t cl_netlocalping = {CVAR_CLIENT, "cl_netlocalping","0", "lags local loopback connection by this much ping time (useful to play more fairly on your own server with people with higher pings)"};
89 static cvar_t cl_netpacketloss_send = {CVAR_CLIENT, "cl_netpacketloss_send","0", "drops this percentage of outgoing packets, useful for testing network protocol robustness (jerky movement, prediction errors, etc)"};
90 static cvar_t cl_netpacketloss_receive = {CVAR_CLIENT, "cl_netpacketloss_receive","0", "drops this percentage of incoming packets, useful for testing network protocol robustness (jerky movement, effects failing to start, sounds failing to play, etc)"};
91 static cvar_t net_slist_queriespersecond = {CVAR_CLIENT, "net_slist_queriespersecond", "20", "how many server information requests to send per second"};
92 static cvar_t net_slist_queriesperframe = {CVAR_CLIENT, "net_slist_queriesperframe", "4", "maximum number of server information requests to send each rendered frame (guards against low framerates causing problems)"};
93 static cvar_t net_slist_timeout = {CVAR_CLIENT, "net_slist_timeout", "4", "how long to listen for a server information response before giving up"};
94 static cvar_t net_slist_pause = {CVAR_CLIENT, "net_slist_pause", "0", "when set to 1, the server list won't update until it is set back to 0"};
95 static cvar_t net_slist_maxtries = {CVAR_CLIENT, "net_slist_maxtries", "3", "how many times to ask the same server for information (more times gives better ping reports but takes longer)"};
96 static cvar_t net_slist_favorites = {CVAR_CLIENT | CVAR_SAVE | CVAR_NQUSERINFOHACK, "net_slist_favorites", "", "contains a list of IP addresses and ports to always query explicitly"};
97 static cvar_t net_tos_dscp = {CVAR_CLIENT | CVAR_SAVE, "net_tos_dscp", "32", "DiffServ Codepoint for network sockets (may need game restart to apply)"};
98 static cvar_t gameversion = {CVAR_SERVER, "gameversion", "0", "version of game data (mod-specific) to be sent to querying clients"};
99 static cvar_t gameversion_min = {CVAR_CLIENT | CVAR_SERVER, "gameversion_min", "-1", "minimum version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible; if -1, gameversion is used alone"};
100 static cvar_t gameversion_max = {CVAR_CLIENT | CVAR_SERVER, "gameversion_max", "-1", "maximum version of game data (mod-specific), when client and server gameversion mismatch in the server browser the server is shown as incompatible; if -1, gameversion is used alone"};
101 static cvar_t rcon_restricted_password = {CVAR_SERVER | CVAR_PRIVATE, "rcon_restricted_password", "", "password to authenticate rcon commands in restricted mode; may be set to a string of the form user1:pass1 user2:pass2 user3:pass3 to allow multiple user accounts - the client then has to specify ONE of these combinations"};
102 static cvar_t rcon_restricted_commands = {CVAR_SERVER, "rcon_restricted_commands", "", "allowed commands for rcon when the restricted mode password was used"};
103 static cvar_t rcon_secure_maxdiff = {CVAR_SERVER, "rcon_secure_maxdiff", "5", "maximum time difference between rcon request and server system clock (to protect against replay attack)"};
104 extern cvar_t rcon_secure;
105 extern cvar_t rcon_secure_challengetimeout;
107 double masterquerytime = -1000;
108 int masterquerycount = 0;
109 int masterreplycount = 0;
110 int serverquerycount = 0;
111 int serverreplycount = 0;
113 challenge_t challenges[MAX_CHALLENGES];
116 /// this is only false if there are still servers left to query
117 static qboolean serverlist_querysleep = true;
118 static qboolean serverlist_paused = false;
119 /// this is pushed a second or two ahead of realtime whenever a master server
120 /// reply is received, to avoid issuing queries while master replies are still
121 /// flooding in (which would make a mess of the ping times)
122 static double serverlist_querywaittime = 0;
125 static int cl_numsockets;
126 static lhnetsocket_t *cl_sockets[16];
127 static int sv_numsockets;
128 static lhnetsocket_t *sv_sockets[16];
130 netconn_t *netconn_list = NULL;
131 mempool_t *netconn_mempool = NULL;
132 void *netconn_mutex = NULL;
134 cvar_t cl_netport = {CVAR_CLIENT, "cl_port", "0", "forces client to use chosen port number if not 0"};
135 cvar_t sv_netport = {CVAR_SERVER, "port", "26000", "server port for players to connect to"};
136 cvar_t net_address = {CVAR_CLIENT | CVAR_SERVER, "net_address", "", "network address to open ipv4 ports on (if empty, use default interfaces)"};
137 cvar_t net_address_ipv6 = {CVAR_CLIENT | CVAR_SERVER, "net_address_ipv6", "", "network address to open ipv6 ports on (if empty, use default interfaces)"};
139 char cl_net_extresponse[NET_EXTRESPONSE_MAX][1400];
140 int cl_net_extresponse_count = 0;
141 int cl_net_extresponse_last = 0;
143 char sv_net_extresponse[NET_EXTRESPONSE_MAX][1400];
144 int sv_net_extresponse_count = 0;
145 int sv_net_extresponse_last = 0;
148 // ServerList interface
149 serverlist_mask_t serverlist_andmasks[SERVERLIST_ANDMASKCOUNT];
150 serverlist_mask_t serverlist_ormasks[SERVERLIST_ORMASKCOUNT];
152 serverlist_infofield_t serverlist_sortbyfield;
153 int serverlist_sortflags;
155 int serverlist_viewcount = 0;
156 unsigned short serverlist_viewlist[SERVERLIST_VIEWLISTSIZE];
158 int serverlist_maxcachecount = 0;
159 int serverlist_cachecount = 0;
160 serverlist_entry_t *serverlist_cache = NULL;
162 qboolean serverlist_consoleoutput;
164 static int nFavorites = 0;
165 static lhnetaddress_t favorites[MAX_FAVORITESERVERS];
166 static int nFavorites_idfp = 0;
167 static char favorites_idfp[MAX_FAVORITESERVERS][FP64_SIZE+1];
169 void NetConn_UpdateFavorites(void)
174 p = net_slist_favorites.string;
175 while((size_t) nFavorites < sizeof(favorites) / sizeof(*favorites) && COM_ParseToken_Console(&p))
177 if(com_token[0] != '[' && strlen(com_token) == FP64_SIZE && !strchr(com_token, '.'))
178 // currently 44 bytes, longest possible IPv6 address: 39 bytes, so this works
179 // (if v6 address contains port, it must start with '[')
181 strlcpy(favorites_idfp[nFavorites_idfp], com_token, sizeof(favorites_idfp[nFavorites_idfp]));
186 if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000))
192 /// helper function to insert a value into the viewset
193 /// spare entries will be removed
194 static void _ServerList_ViewList_Helper_InsertBefore( int index, serverlist_entry_t *entry )
197 if( serverlist_viewcount < SERVERLIST_VIEWLISTSIZE ) {
198 i = serverlist_viewcount++;
200 i = SERVERLIST_VIEWLISTSIZE - 1;
203 for( ; i > index ; i-- )
204 serverlist_viewlist[ i ] = serverlist_viewlist[ i - 1 ];
206 serverlist_viewlist[index] = (int)(entry - serverlist_cache);
209 /// we suppose serverlist_viewcount to be valid, ie > 0
210 static void _ServerList_ViewList_Helper_Remove( int index )
212 serverlist_viewcount--;
213 for( ; index < serverlist_viewcount ; index++ )
214 serverlist_viewlist[index] = serverlist_viewlist[index + 1];
217 /// \returns true if A should be inserted before B
218 static qboolean _ServerList_Entry_Compare( serverlist_entry_t *A, serverlist_entry_t *B )
220 int result = 0; // > 0 if for numbers A > B and for text if A < B
222 if( serverlist_sortflags & SLSF_CATEGORIES )
224 result = A->info.category - B->info.category;
229 if( serverlist_sortflags & SLSF_FAVORITES )
231 if(A->info.isfavorite != B->info.isfavorite)
232 return A->info.isfavorite;
235 switch( serverlist_sortbyfield ) {
237 result = A->info.ping - B->info.ping;
239 case SLIF_MAXPLAYERS:
240 result = A->info.maxplayers - B->info.maxplayers;
242 case SLIF_NUMPLAYERS:
243 result = A->info.numplayers - B->info.numplayers;
246 result = A->info.numbots - B->info.numbots;
249 result = A->info.numhumans - B->info.numhumans;
252 result = A->info.freeslots - B->info.freeslots;
255 result = A->info.protocol - B->info.protocol;
258 result = strcmp( B->info.cname, A->info.cname );
261 result = strcasecmp( B->info.game, A->info.game );
264 result = strcasecmp( B->info.map, A->info.map );
267 result = strcasecmp( B->info.mod, A->info.mod );
270 result = strcasecmp( B->info.name, A->info.name );
273 result = strcasecmp( B->info.qcstatus, A->info.qcstatus ); // not really THAT useful, though
276 result = A->info.category - B->info.category;
278 case SLIF_ISFAVORITE:
279 result = !!B->info.isfavorite - !!A->info.isfavorite;
282 Con_DPrint( "_ServerList_Entry_Compare: Bad serverlist_sortbyfield!\n" );
288 if( serverlist_sortflags & SLSF_DESCENDING )
294 // if the chosen sort key is identical, sort by index
295 // (makes this a stable sort, so that later replies from servers won't
296 // shuffle the servers around when they have the same ping)
300 static qboolean _ServerList_CompareInt( int A, serverlist_maskop_t op, int B )
302 // This should actually be done with some intermediate and end-of-function return
314 case SLMO_GREATEREQUAL:
316 case SLMO_NOTCONTAIN:
317 case SLMO_STARTSWITH:
318 case SLMO_NOTSTARTSWITH:
321 Con_DPrint( "_ServerList_CompareInt: Bad op!\n" );
326 static qboolean _ServerList_CompareStr( const char *A, serverlist_maskop_t op, const char *B )
329 char bufferA[ 1400 ], bufferB[ 1400 ]; // should be more than enough
330 COM_StringDecolorize(A, 0, bufferA, sizeof(bufferA), false);
331 for (i = 0;i < (int)sizeof(bufferA)-1 && bufferA[i];i++)
332 bufferA[i] = (bufferA[i] >= 'A' && bufferA[i] <= 'Z') ? (bufferA[i] + 'a' - 'A') : bufferA[i];
334 for (i = 0;i < (int)sizeof(bufferB)-1 && B[i];i++)
335 bufferB[i] = (B[i] >= 'A' && B[i] <= 'Z') ? (B[i] + 'a' - 'A') : B[i];
338 // Same here, also using an intermediate & final return would be more appropriate
342 return *bufferB && !!strstr( bufferA, bufferB ); // we want a real bool
343 case SLMO_NOTCONTAIN:
344 return !*bufferB || !strstr( bufferA, bufferB );
345 case SLMO_STARTSWITH:
346 //Con_Printf("startsWith: %s %s\n", bufferA, bufferB);
347 return *bufferB && !memcmp(bufferA, bufferB, strlen(bufferB));
348 case SLMO_NOTSTARTSWITH:
349 return !*bufferB || memcmp(bufferA, bufferB, strlen(bufferB));
351 return strcmp( bufferA, bufferB ) < 0;
353 return strcmp( bufferA, bufferB ) <= 0;
355 return strcmp( bufferA, bufferB ) == 0;
357 return strcmp( bufferA, bufferB ) > 0;
359 return strcmp( bufferA, bufferB ) != 0;
360 case SLMO_GREATEREQUAL:
361 return strcmp( bufferA, bufferB ) >= 0;
363 Con_DPrint( "_ServerList_CompareStr: Bad op!\n" );
368 static qboolean _ServerList_Entry_Mask( serverlist_mask_t *mask, serverlist_info_t *info )
370 if( !_ServerList_CompareInt( info->ping, mask->tests[SLIF_PING], mask->info.ping ) )
372 if( !_ServerList_CompareInt( info->maxplayers, mask->tests[SLIF_MAXPLAYERS], mask->info.maxplayers ) )
374 if( !_ServerList_CompareInt( info->numplayers, mask->tests[SLIF_NUMPLAYERS], mask->info.numplayers ) )
376 if( !_ServerList_CompareInt( info->numbots, mask->tests[SLIF_NUMBOTS], mask->info.numbots ) )
378 if( !_ServerList_CompareInt( info->numhumans, mask->tests[SLIF_NUMHUMANS], mask->info.numhumans ) )
380 if( !_ServerList_CompareInt( info->freeslots, mask->tests[SLIF_FREESLOTS], mask->info.freeslots ) )
382 if( !_ServerList_CompareInt( info->protocol, mask->tests[SLIF_PROTOCOL], mask->info.protocol ))
384 if( *mask->info.cname
385 && !_ServerList_CompareStr( info->cname, mask->tests[SLIF_CNAME], mask->info.cname ) )
388 && !_ServerList_CompareStr( info->game, mask->tests[SLIF_GAME], mask->info.game ) )
391 && !_ServerList_CompareStr( info->mod, mask->tests[SLIF_MOD], mask->info.mod ) )
394 && !_ServerList_CompareStr( info->map, mask->tests[SLIF_MAP], mask->info.map ) )
397 && !_ServerList_CompareStr( info->name, mask->tests[SLIF_NAME], mask->info.name ) )
399 if( *mask->info.qcstatus
400 && !_ServerList_CompareStr( info->qcstatus, mask->tests[SLIF_QCSTATUS], mask->info.qcstatus ) )
402 if( *mask->info.players
403 && !_ServerList_CompareStr( info->players, mask->tests[SLIF_PLAYERS], mask->info.players ) )
405 if( !_ServerList_CompareInt( info->category, mask->tests[SLIF_CATEGORY], mask->info.category ) )
407 if( !_ServerList_CompareInt( info->isfavorite, mask->tests[SLIF_ISFAVORITE], mask->info.isfavorite ))
412 static void ServerList_ViewList_Insert( serverlist_entry_t *entry )
414 int start, end, mid, i;
417 // reject incompatible servers
419 entry->info.gameversion != gameversion.integer
422 gameversion_min.integer >= 0 // min/max range set by user/mod?
423 && gameversion_max.integer >= 0
424 && gameversion_min.integer <= entry->info.gameversion // version of server in min/max range?
425 && gameversion_max.integer >= entry->info.gameversion
430 // refresh the "favorite" status
431 entry->info.isfavorite = false;
432 if(LHNETADDRESS_FromString(&addr, entry->info.cname, 26000))
434 char idfp[FP64_SIZE+1];
435 for(i = 0; i < nFavorites; ++i)
437 if(LHNETADDRESS_Compare(&addr, &favorites[i]) == 0)
439 entry->info.isfavorite = true;
443 if(Crypto_RetrieveHostKey(&addr, 0, NULL, 0, idfp, sizeof(idfp), NULL, NULL))
445 for(i = 0; i < nFavorites_idfp; ++i)
447 if(!strcmp(idfp, favorites_idfp[i]))
449 entry->info.isfavorite = true;
456 // refresh the "category"
457 entry->info.category = MR_GetServerListEntryCategory(entry);
459 // FIXME: change this to be more readable (...)
460 // now check whether it passes through the masks
461 for( start = 0 ; start < SERVERLIST_ANDMASKCOUNT && serverlist_andmasks[start].active; start++ )
462 if( !_ServerList_Entry_Mask( &serverlist_andmasks[start], &entry->info ) )
465 for( start = 0 ; start < SERVERLIST_ORMASKCOUNT && serverlist_ormasks[start].active ; start++ )
466 if( _ServerList_Entry_Mask( &serverlist_ormasks[start], &entry->info ) )
468 if( start == SERVERLIST_ORMASKCOUNT || (start > 0 && !serverlist_ormasks[start].active) )
471 if( !serverlist_viewcount ) {
472 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
475 // ok, insert it, we just need to find out where exactly:
478 // check whether to insert it as new first item
479 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(0) ) ) {
480 _ServerList_ViewList_Helper_InsertBefore( 0, entry );
482 } // check whether to insert it as new last item
483 else if( !_ServerList_Entry_Compare( entry, ServerList_GetViewEntry(serverlist_viewcount - 1) ) ) {
484 _ServerList_ViewList_Helper_InsertBefore( serverlist_viewcount, entry );
488 end = serverlist_viewcount - 1;
489 while( end > start + 1 )
491 mid = (start + end) / 2;
492 // test the item that lies in the middle between start and end
493 if( _ServerList_Entry_Compare( entry, ServerList_GetViewEntry(mid) ) )
494 // the item has to be in the upper half
497 // the item has to be in the lower half
500 _ServerList_ViewList_Helper_InsertBefore( start + 1, entry );
503 static void ServerList_ViewList_Remove( serverlist_entry_t *entry )
506 for( i = 0; i < serverlist_viewcount; i++ )
508 if (ServerList_GetViewEntry(i) == entry)
510 _ServerList_ViewList_Helper_Remove(i);
516 void ServerList_RebuildViewList(void)
520 serverlist_viewcount = 0;
521 for( i = 0 ; i < serverlist_cachecount ; i++ ) {
522 serverlist_entry_t *entry = &serverlist_cache[i];
523 // also display entries that are currently being refreshed [11/8/2007 Black]
524 if( entry->query == SQS_QUERIED || entry->query == SQS_REFRESHING )
525 ServerList_ViewList_Insert( entry );
529 void ServerList_ResetMasks(void)
533 memset( &serverlist_andmasks, 0, sizeof( serverlist_andmasks ) );
534 memset( &serverlist_ormasks, 0, sizeof( serverlist_ormasks ) );
535 // numbots needs to be compared to -1 to always succeed
536 for(i = 0; i < SERVERLIST_ANDMASKCOUNT; ++i)
537 serverlist_andmasks[i].info.numbots = -1;
538 for(i = 0; i < SERVERLIST_ORMASKCOUNT; ++i)
539 serverlist_ormasks[i].info.numbots = -1;
542 void ServerList_GetPlayerStatistics(int *numplayerspointer, int *maxplayerspointer)
545 int numplayers = 0, maxplayers = 0;
546 for (i = 0;i < serverlist_cachecount;i++)
548 if (serverlist_cache[i].query == SQS_QUERIED)
550 numplayers += serverlist_cache[i].info.numhumans;
551 maxplayers += serverlist_cache[i].info.maxplayers;
554 *numplayerspointer = numplayers;
555 *maxplayerspointer = maxplayers;
559 static void _ServerList_Test(void)
562 if (serverlist_maxcachecount <= 1024)
564 serverlist_maxcachecount = 1024;
565 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
567 for( i = 0 ; i < 1024 ; i++ ) {
568 memset( &serverlist_cache[serverlist_cachecount], 0, sizeof( serverlist_entry_t ) );
569 serverlist_cache[serverlist_cachecount].info.ping = 1000 + 1024 - i;
570 dpsnprintf( serverlist_cache[serverlist_cachecount].info.name, sizeof(serverlist_cache[serverlist_cachecount].info.name), "Black's ServerList Test %i", i );
571 serverlist_cache[serverlist_cachecount].finished = true;
572 dpsnprintf( serverlist_cache[serverlist_cachecount].line1, sizeof(serverlist_cache[serverlist_cachecount].info.line1), "%i %s", serverlist_cache[serverlist_cachecount].info.ping, serverlist_cache[serverlist_cachecount].info.name );
573 ServerList_ViewList_Insert( &serverlist_cache[serverlist_cachecount] );
574 serverlist_cachecount++;
579 void ServerList_QueryList(qboolean resetcache, qboolean querydp, qboolean queryqw, qboolean consoleoutput)
581 masterquerytime = realtime;
582 masterquerycount = 0;
583 masterreplycount = 0;
585 serverquerycount = 0;
586 serverreplycount = 0;
587 serverlist_cachecount = 0;
588 serverlist_viewcount = 0;
589 serverlist_maxcachecount = 0;
590 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
592 // refresh all entries
594 for( n = 0 ; n < serverlist_cachecount ; n++ ) {
595 serverlist_entry_t *entry = &serverlist_cache[ n ];
596 entry->query = SQS_REFRESHING;
597 entry->querycounter = 0;
600 serverlist_consoleoutput = consoleoutput;
602 //_ServerList_Test();
604 NetConn_QueryMasters(querydp, queryqw);
610 int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
614 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
615 Thread_LockMutex(netconn_mutex);
616 length = LHNET_Read(mysocket, data, maxlength, peeraddress);
617 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
618 Thread_UnlockMutex(netconn_mutex);
621 if (cl_netpacketloss_receive.integer)
622 for (i = 0;i < cl_numsockets;i++)
623 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_receive.integer)
625 if (developer_networking.integer)
627 char addressstring[128], addressstring2[128];
628 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
631 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
632 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length, addressstring2);
633 Com_HexDumpToConsole((unsigned char *)data, length);
636 Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", (void *)mysocket, addressstring, (void *)data, maxlength, (void *)peeraddress, length);
641 int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
645 if (cl_netpacketloss_send.integer)
646 for (i = 0;i < cl_numsockets;i++)
647 if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_send.integer)
649 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
650 Thread_LockMutex(netconn_mutex);
651 ret = LHNET_Write(mysocket, data, length, peeraddress);
652 if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex)
653 Thread_UnlockMutex(netconn_mutex);
654 if (developer_networking.integer)
656 char addressstring[128], addressstring2[128];
657 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
658 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
659 Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", (void *)mysocket, addressstring, (void *)data, length, (void *)peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
660 Com_HexDumpToConsole((unsigned char *)data, length);
665 int NetConn_WriteString(lhnetsocket_t *mysocket, const char *string, const lhnetaddress_t *peeraddress)
667 // note this does not include the trailing NULL because we add that in the parser
668 return NetConn_Write(mysocket, string, (int)strlen(string), peeraddress);
671 qboolean NetConn_CanSend(netconn_t *conn)
673 conn->outgoing_packetcounter = (conn->outgoing_packetcounter + 1) % NETGRAPH_PACKETS;
674 conn->outgoing_netgraph[conn->outgoing_packetcounter].time = realtime;
675 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
676 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
677 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes = NETGRAPH_NOPACKET;
678 conn->outgoing_netgraph[conn->outgoing_packetcounter].cleartime = conn->cleartime;
679 if (realtime > conn->cleartime)
683 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_CHOKEDPACKET;
688 static void NetConn_UpdateCleartime(double *cleartime, int rate, int burstsize, int len)
690 double bursttime = burstsize / (double)rate;
692 // delay later packets to obey rate limit
693 if (*cleartime < realtime - bursttime)
694 *cleartime = realtime - bursttime;
695 *cleartime = *cleartime + len / (double)rate;
697 // limit bursts to one packet in size ("dialup mode" emulating old behaviour)
698 if (net_test.integer)
700 if (*cleartime < realtime)
701 *cleartime = realtime;
705 static int NetConn_AddCryptoFlag(crypto_t *crypto)
707 // HACK: if an encrypted connection is used, randomly set some unused
708 // flags. When AES encryption is enabled, that will make resends differ
709 // from the original, so that e.g. substring filters in a router/IPS
710 // are unlikely to match a second time. See also "startkeylogger".
712 if (crypto->authenticated)
714 // Let's always set at least one of the bits.
715 int r = rand() % 7 + 1;
717 flag |= NETFLAG_CRYPTO0;
719 flag |= NETFLAG_CRYPTO1;
721 flag |= NETFLAG_CRYPTO2;
726 int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolversion_t protocol, int rate, int burstsize, qboolean quakesignon_suppressreliables)
729 unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
730 unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
732 // if this packet was supposedly choked, but we find ourselves sending one
733 // anyway, make sure the size counting starts at zero
734 // (this mostly happens on level changes and disconnects and such)
735 if (conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes == NETGRAPH_CHOKEDPACKET)
736 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes = NETGRAPH_NOPACKET;
738 conn->outgoing_netgraph[conn->outgoing_packetcounter].cleartime = conn->cleartime;
740 if (protocol == PROTOCOL_QUAKEWORLD)
743 qboolean sendreliable;
745 // note that it is ok to send empty messages to the qw server,
746 // otherwise it won't respond to us at all
748 sendreliable = false;
749 // if the remote side dropped the last reliable message, resend it
750 if (conn->qw.incoming_acknowledged > conn->qw.last_reliable_sequence && conn->qw.incoming_reliable_acknowledged != conn->qw.reliable_sequence)
752 // if the reliable transmit buffer is empty, copy the current message out
753 if (!conn->sendMessageLength && conn->message.cursize)
755 memcpy (conn->sendMessage, conn->message.data, conn->message.cursize);
756 conn->sendMessageLength = conn->message.cursize;
757 SZ_Clear(&conn->message); // clear the message buffer
758 conn->qw.reliable_sequence ^= 1;
761 // outgoing unreliable packet number, and outgoing reliable packet number (0 or 1)
762 StoreLittleLong(sendbuffer, conn->outgoing_unreliable_sequence | (((unsigned int)sendreliable)<<31));
763 // last received unreliable packet number, and last received reliable packet number (0 or 1)
764 StoreLittleLong(sendbuffer + 4, conn->qw.incoming_sequence | (((unsigned int)conn->qw.incoming_reliable_sequence)<<31));
766 conn->outgoing_unreliable_sequence++;
767 // client sends qport in every packet
768 if (conn == cls.netcon)
770 *((short *)(sendbuffer + 8)) = LittleShort(cls.qw_qport);
772 // also update cls.qw_outgoing_sequence
773 cls.qw_outgoing_sequence = conn->outgoing_unreliable_sequence;
775 if (packetLen + (sendreliable ? conn->sendMessageLength : 0) > 1400)
777 Con_Printf ("NetConn_SendUnreliableMessage: reliable message too big %u\n", data->cursize);
781 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
783 // add the reliable message if there is one
786 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += conn->sendMessageLength + 28;
787 memcpy(sendbuffer + packetLen, conn->sendMessage, conn->sendMessageLength);
788 packetLen += conn->sendMessageLength;
789 conn->qw.last_reliable_sequence = conn->outgoing_unreliable_sequence;
792 // add the unreliable message if possible
793 if (packetLen + data->cursize <= 1400)
795 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += data->cursize + 28;
796 memcpy(sendbuffer + packetLen, data->data, data->cursize);
797 packetLen += data->cursize;
800 NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress);
803 conn->unreliableMessagesSent++;
805 totallen += packetLen + 28;
809 unsigned int packetLen;
810 unsigned int dataLen;
815 // if a reliable message fragment has been lost, send it again
816 if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0)
818 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
820 dataLen = conn->sendMessageLength;
825 dataLen = MAX_PACKETFRAGMENT;
829 packetLen = NET_HEADERSIZE + dataLen;
831 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom | NetConn_AddCryptoFlag(&conn->crypto)));
832 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence - 1);
833 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
835 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
837 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
838 if (sendme && NetConn_Write(conn->mysocket, sendme, (int)sendmelen, &conn->peeraddress) == (int)sendmelen)
840 conn->lastSendTime = realtime;
841 conn->packetsReSent++;
844 totallen += (int)sendmelen + 28;
847 // if we have a new reliable message to send, do so
848 if (!conn->sendMessageLength && conn->message.cursize && !quakesignon_suppressreliables)
850 if (conn->message.cursize > (int)sizeof(conn->sendMessage))
852 Con_Printf("NetConn_SendUnreliableMessage: reliable message too big (%u > %u)\n", conn->message.cursize, (int)sizeof(conn->sendMessage));
853 conn->message.overflowed = true;
857 if (developer_networking.integer && conn == cls.netcon)
859 Con_Print("client sending reliable message to server:\n");
860 SZ_HexDumpToConsole(&conn->message);
863 memcpy(conn->sendMessage, conn->message.data, conn->message.cursize);
864 conn->sendMessageLength = conn->message.cursize;
865 SZ_Clear(&conn->message);
867 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
869 dataLen = conn->sendMessageLength;
874 dataLen = MAX_PACKETFRAGMENT;
878 packetLen = NET_HEADERSIZE + dataLen;
880 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom | NetConn_AddCryptoFlag(&conn->crypto)));
881 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
882 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
884 conn->nq.sendSequence++;
886 conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28;
888 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
890 NetConn_Write(conn->mysocket, sendme, (int)sendmelen, &conn->peeraddress);
892 conn->lastSendTime = realtime;
894 conn->reliableMessagesSent++;
896 totallen += (int)sendmelen + 28;
899 // if we have an unreliable message to send, do so
902 packetLen = NET_HEADERSIZE + data->cursize;
904 if (packetLen > (int)sizeof(sendbuffer))
906 Con_Printf("NetConn_SendUnreliableMessage: message too big %u\n", data->cursize);
910 StoreBigLong(sendbuffer, packetLen | NETFLAG_UNRELIABLE | NetConn_AddCryptoFlag(&conn->crypto));
911 StoreBigLong(sendbuffer + 4, conn->outgoing_unreliable_sequence);
912 memcpy(sendbuffer + NET_HEADERSIZE, data->data, data->cursize);
914 conn->outgoing_unreliable_sequence++;
916 conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28;
918 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
920 NetConn_Write(conn->mysocket, sendme, (int)sendmelen, &conn->peeraddress);
923 conn->unreliableMessagesSent++;
925 totallen += (int)sendmelen + 28;
929 NetConn_UpdateCleartime(&conn->cleartime, rate, burstsize, totallen);
934 qboolean NetConn_HaveClientPorts(void)
936 return !!cl_numsockets;
939 qboolean NetConn_HaveServerPorts(void)
941 return !!sv_numsockets;
944 void NetConn_CloseClientPorts(void)
946 for (;cl_numsockets > 0;cl_numsockets--)
947 if (cl_sockets[cl_numsockets - 1])
948 LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
951 static void NetConn_OpenClientPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport)
953 lhnetaddress_t address;
956 char addressstring2[1024];
957 if (addressstring && addressstring[0])
958 success = LHNETADDRESS_FromString(&address, addressstring, defaultport);
960 success = LHNETADDRESS_FromPort(&address, addresstype, defaultport);
963 if ((s = LHNET_OpenSocket_Connectionless(&address)))
965 cl_sockets[cl_numsockets++] = s;
966 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
967 if (addresstype != LHNETADDRESSTYPE_LOOP)
968 Con_Printf("Client opened a socket on address %s\n", addressstring2);
972 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
973 Con_Printf("Client failed to open a socket on address %s\n", addressstring2);
977 Con_Printf("Client unable to parse address %s\n", addressstring);
980 void NetConn_OpenClientPorts(void)
983 NetConn_CloseClientPorts();
985 SV_LockThreadMutex(); // FIXME recursive?
986 Crypto_LoadKeys(); // client sockets
987 SV_UnlockThreadMutex();
989 port = bound(0, cl_netport.integer, 65535);
990 if (cl_netport.integer != port)
991 Cvar_SetValueQuick(&cl_netport, port);
993 Con_Printf("Client using an automatically assigned port\n");
995 Con_Printf("Client using port %i\n", port);
996 NetConn_OpenClientPort(NULL, LHNETADDRESSTYPE_LOOP, 2);
997 NetConn_OpenClientPort(net_address.string, LHNETADDRESSTYPE_INET4, port);
998 #ifndef NOSUPPORTIPV6
999 NetConn_OpenClientPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port);
1003 void NetConn_CloseServerPorts(void)
1005 for (;sv_numsockets > 0;sv_numsockets--)
1006 if (sv_sockets[sv_numsockets - 1])
1007 LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
1010 static qboolean NetConn_OpenServerPort(const char *addressstring, lhnetaddresstype_t addresstype, int defaultport, int range)
1012 lhnetaddress_t address;
1015 char addressstring2[1024];
1018 for (port = defaultport; port <= defaultport + range; port++)
1020 if (addressstring && addressstring[0])
1021 success = LHNETADDRESS_FromString(&address, addressstring, port);
1023 success = LHNETADDRESS_FromPort(&address, addresstype, port);
1026 if ((s = LHNET_OpenSocket_Connectionless(&address)))
1028 sv_sockets[sv_numsockets++] = s;
1029 LHNETADDRESS_ToString(LHNET_AddressFromSocket(s), addressstring2, sizeof(addressstring2), true);
1030 if (addresstype != LHNETADDRESSTYPE_LOOP)
1031 Con_Printf("Server listening on address %s\n", addressstring2);
1036 LHNETADDRESS_ToString(&address, addressstring2, sizeof(addressstring2), true);
1037 Con_Printf("Server failed to open socket on address %s\n", addressstring2);
1042 Con_Printf("Server unable to parse address %s\n", addressstring);
1043 // if it cant parse one address, it wont be able to parse another for sure
1050 void NetConn_OpenServerPorts(int opennetports)
1053 NetConn_CloseServerPorts();
1055 SV_LockThreadMutex(); // FIXME recursive?
1056 Crypto_LoadKeys(); // server sockets
1057 SV_UnlockThreadMutex();
1059 NetConn_UpdateSockets();
1060 port = bound(0, sv_netport.integer, 65535);
1063 Con_Printf("Server using port %i\n", port);
1064 if (sv_netport.integer != port)
1065 Cvar_SetValueQuick(&sv_netport, port);
1066 if (cls.state != ca_dedicated)
1067 NetConn_OpenServerPort(NULL, LHNETADDRESSTYPE_LOOP, 1, 1);
1070 #ifndef NOSUPPORTIPV6
1071 qboolean ip4success = NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1072 NetConn_OpenServerPort(net_address_ipv6.string, LHNETADDRESSTYPE_INET6, port, ip4success ? 1 : 100);
1074 NetConn_OpenServerPort(net_address.string, LHNETADDRESSTYPE_INET4, port, 100);
1077 if (sv_numsockets == 0)
1078 Host_Error("NetConn_OpenServerPorts: unable to open any ports!");
1081 lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
1083 int i, a = LHNETADDRESS_GetAddressType(address);
1084 for (i = 0;i < cl_numsockets;i++)
1085 if (cl_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
1086 return cl_sockets[i];
1090 lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
1092 int i, a = LHNETADDRESS_GetAddressType(address);
1093 for (i = 0;i < sv_numsockets;i++)
1094 if (sv_sockets[i] && LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
1095 return sv_sockets[i];
1099 netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
1102 conn = (netconn_t *)Mem_Alloc(netconn_mempool, sizeof(*conn));
1103 conn->mysocket = mysocket;
1104 conn->peeraddress = *peeraddress;
1105 conn->lastMessageTime = realtime;
1106 conn->message.data = conn->messagedata;
1107 conn->message.maxsize = sizeof(conn->messagedata);
1108 conn->message.cursize = 0;
1109 // LadyHavoc: (inspired by ProQuake) use a short connect timeout to
1110 // reduce effectiveness of connection request floods
1111 conn->timeout = realtime + net_connecttimeout.value;
1112 LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
1113 conn->next = netconn_list;
1114 netconn_list = conn;
1118 void NetConn_ClearFlood(lhnetaddress_t *peeraddress, server_floodaddress_t *floodlist, size_t floodlength);
1119 void NetConn_Close(netconn_t *conn)
1122 // remove connection from list
1124 // allow the client to reconnect immediately
1125 NetConn_ClearFlood(&(conn->peeraddress), sv.connectfloodaddresses, sizeof(sv.connectfloodaddresses) / sizeof(sv.connectfloodaddresses[0]));
1127 if (conn == netconn_list)
1128 netconn_list = conn->next;
1131 for (c = netconn_list;c;c = c->next)
1133 if (c->next == conn)
1135 c->next = conn->next;
1139 // not found in list, we'll avoid crashing here...
1147 static int clientport = -1;
1148 static int clientport2 = -1;
1149 static int hostport = -1;
1150 void NetConn_UpdateSockets(void)
1154 // TODO add logic to automatically close sockets if needed
1155 LHNET_DefaultDSCP(net_tos_dscp.integer);
1157 if (cls.state != ca_dedicated)
1159 if (clientport2 != cl_netport.integer)
1161 clientport2 = cl_netport.integer;
1162 if (cls.state == ca_connected)
1163 Con_Print("Changing \"cl_port\" will not take effect until you reconnect.\n");
1165 if (cls.state == ca_disconnected && clientport != clientport2)
1167 clientport = clientport2;
1168 NetConn_CloseClientPorts();
1170 if (cl_numsockets == 0)
1171 NetConn_OpenClientPorts();
1174 if (hostport != sv_netport.integer)
1176 hostport = sv_netport.integer;
1178 Con_Print("Changing \"port\" will not take effect until \"map\" command is executed.\n");
1181 for (j = 0;j < MAX_RCONS;j++)
1183 i = (cls.rcon_ringpos + j + 1) % MAX_RCONS;
1184 if(cls.rcon_commands[i][0])
1186 if(realtime > cls.rcon_timeout[i])
1189 LHNETADDRESS_ToString(&cls.rcon_addresses[i], s, sizeof(s), true);
1190 Con_Printf("rcon to %s (for command %s) failed: challenge request timed out\n", s, cls.rcon_commands[i]);
1191 cls.rcon_commands[i][0] = 0;
1199 static int NetConn_ReceivedMessage(netconn_t *conn, const unsigned char *data, size_t length, protocolversion_t protocol, double newtimeout)
1201 int originallength = (int)length;
1202 unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
1203 unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1204 unsigned char cryptoreadbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1208 if (protocol == PROTOCOL_QUAKEWORLD)
1210 unsigned int sequence, sequence_ack;
1211 qboolean reliable_ack, reliable_message;
1215 sequence = LittleLong(*((int *)(data + 0)));
1216 sequence_ack = LittleLong(*((int *)(data + 4)));
1220 if (conn != cls.netcon)
1225 // TODO: use qport to identify that this client really is who they say they are? (and elsewhere in the code to identify the connection without a port match?)
1226 //qport = LittleShort(*((int *)(data + 8)));
1231 conn->packetsReceived++;
1232 reliable_message = (sequence >> 31) != 0;
1233 reliable_ack = (sequence_ack >> 31) != 0;
1234 sequence &= ~(1<<31);
1235 sequence_ack &= ~(1<<31);
1236 if (sequence <= conn->qw.incoming_sequence)
1238 //Con_DPrint("Got a stale datagram\n");
1241 count = sequence - (conn->qw.incoming_sequence + 1);
1244 conn->droppedDatagrams += count;
1245 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1246 // If too may packets have been dropped, only write the
1247 // last NETGRAPH_PACKETS ones to the netgraph. Why?
1248 // Because there's no point in writing more than
1249 // these as the netgraph is going to be full anyway.
1250 if (count > NETGRAPH_PACKETS)
1251 count = NETGRAPH_PACKETS;
1254 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1255 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1256 conn->incoming_netgraph[conn->incoming_packetcounter].cleartime = conn->incoming_cleartime;
1257 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1258 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1259 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1262 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1263 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1264 conn->incoming_netgraph[conn->incoming_packetcounter].cleartime = conn->incoming_cleartime;
1265 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1266 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1267 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1268 NetConn_UpdateCleartime(&conn->incoming_cleartime, cl_rate.integer, cl_rate_burstsize.integer, originallength + 28);
1270 // limit bursts to one packet in size ("dialup mode" emulating old behaviour)
1271 if (net_test.integer)
1273 if (conn->cleartime < realtime)
1274 conn->cleartime = realtime;
1277 if (reliable_ack == conn->qw.reliable_sequence)
1279 // received, now we will be able to send another reliable message
1280 conn->sendMessageLength = 0;
1281 conn->reliableMessagesReceived++;
1283 conn->qw.incoming_sequence = sequence;
1284 if (conn == cls.netcon)
1285 cls.qw_incoming_sequence = conn->qw.incoming_sequence;
1286 conn->qw.incoming_acknowledged = sequence_ack;
1287 conn->qw.incoming_reliable_acknowledged = reliable_ack;
1288 if (reliable_message)
1289 conn->qw.incoming_reliable_sequence ^= 1;
1290 conn->lastMessageTime = realtime;
1291 conn->timeout = realtime + newtimeout;
1292 conn->unreliableMessagesReceived++;
1293 if (conn == cls.netcon)
1295 SZ_Clear(&cl_message);
1296 SZ_Write(&cl_message, data, (int)length);
1297 MSG_BeginReading(&cl_message);
1301 SZ_Clear(&sv_message);
1302 SZ_Write(&sv_message, data, (int)length);
1303 MSG_BeginReading(&sv_message);
1311 unsigned int sequence;
1316 originallength = (int)length;
1317 data = (const unsigned char *) Crypto_DecryptPacket(&conn->crypto, data, length, cryptoreadbuffer, &length, sizeof(cryptoreadbuffer));
1323 qlength = (unsigned int)BuffBigLong(data);
1324 flags = qlength & ~NETFLAG_LENGTH_MASK;
1325 qlength &= NETFLAG_LENGTH_MASK;
1326 // control packets were already handled
1327 if (!(flags & NETFLAG_CTL) && qlength == length)
1329 sequence = BuffBigLong(data + 4);
1330 conn->packetsReceived++;
1333 if (flags & NETFLAG_UNRELIABLE)
1335 if (sequence >= conn->nq.unreliableReceiveSequence)
1337 if (sequence > conn->nq.unreliableReceiveSequence)
1339 count = sequence - conn->nq.unreliableReceiveSequence;
1340 conn->droppedDatagrams += count;
1341 //Con_DPrintf("Dropped %u datagram(s)\n", count);
1342 // If too may packets have been dropped, only write the
1343 // last NETGRAPH_PACKETS ones to the netgraph. Why?
1344 // Because there's no point in writing more than
1345 // these as the netgraph is going to be full anyway.
1346 if (count > NETGRAPH_PACKETS)
1347 count = NETGRAPH_PACKETS;
1350 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1351 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1352 conn->incoming_netgraph[conn->incoming_packetcounter].cleartime = conn->incoming_cleartime;
1353 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = NETGRAPH_LOSTPACKET;
1354 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1355 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1358 conn->incoming_packetcounter = (conn->incoming_packetcounter + 1) % NETGRAPH_PACKETS;
1359 conn->incoming_netgraph[conn->incoming_packetcounter].time = realtime;
1360 conn->incoming_netgraph[conn->incoming_packetcounter].cleartime = conn->incoming_cleartime;
1361 conn->incoming_netgraph[conn->incoming_packetcounter].unreliablebytes = originallength + 28;
1362 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes = NETGRAPH_NOPACKET;
1363 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes = NETGRAPH_NOPACKET;
1364 NetConn_UpdateCleartime(&conn->incoming_cleartime, cl_rate.integer, cl_rate_burstsize.integer, originallength + 28);
1366 conn->nq.unreliableReceiveSequence = sequence + 1;
1367 conn->lastMessageTime = realtime;
1368 conn->timeout = realtime + newtimeout;
1369 conn->unreliableMessagesReceived++;
1372 if (conn == cls.netcon)
1374 SZ_Clear(&cl_message);
1375 SZ_Write(&cl_message, data, (int)length);
1376 MSG_BeginReading(&cl_message);
1380 SZ_Clear(&sv_message);
1381 SZ_Write(&sv_message, data, (int)length);
1382 MSG_BeginReading(&sv_message);
1388 // Con_DPrint("Got a stale datagram\n");
1391 else if (flags & NETFLAG_ACK)
1393 conn->incoming_netgraph[conn->incoming_packetcounter].ackbytes += originallength + 28;
1394 NetConn_UpdateCleartime(&conn->incoming_cleartime, cl_rate.integer, cl_rate_burstsize.integer, originallength + 28);
1396 if (sequence == (conn->nq.sendSequence - 1))
1398 if (sequence == conn->nq.ackSequence)
1400 conn->nq.ackSequence++;
1401 if (conn->nq.ackSequence != conn->nq.sendSequence)
1402 Con_DPrint("ack sequencing error\n");
1403 conn->lastMessageTime = realtime;
1404 conn->timeout = realtime + newtimeout;
1405 if (conn->sendMessageLength > MAX_PACKETFRAGMENT)
1407 unsigned int packetLen;
1408 unsigned int dataLen;
1411 conn->sendMessageLength -= MAX_PACKETFRAGMENT;
1412 memmove(conn->sendMessage, conn->sendMessage+MAX_PACKETFRAGMENT, conn->sendMessageLength);
1414 if (conn->sendMessageLength <= MAX_PACKETFRAGMENT)
1416 dataLen = conn->sendMessageLength;
1421 dataLen = MAX_PACKETFRAGMENT;
1425 packetLen = NET_HEADERSIZE + dataLen;
1427 StoreBigLong(sendbuffer, packetLen | (NETFLAG_DATA | eom | NetConn_AddCryptoFlag(&conn->crypto)));
1428 StoreBigLong(sendbuffer + 4, conn->nq.sendSequence);
1429 memcpy(sendbuffer + NET_HEADERSIZE, conn->sendMessage, dataLen);
1431 conn->nq.sendSequence++;
1433 sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1434 if (sendme && NetConn_Write(conn->mysocket, sendme, (int)sendmelen, &conn->peeraddress) == (int)sendmelen)
1436 conn->lastSendTime = realtime;
1437 conn->packetsSent++;
1441 conn->sendMessageLength = 0;
1444 // Con_DPrint("Duplicate ACK received\n");
1447 // Con_DPrint("Stale ACK received\n");
1450 else if (flags & NETFLAG_DATA)
1452 unsigned char temppacket[8];
1453 conn->incoming_netgraph[conn->incoming_packetcounter].reliablebytes += originallength + 28;
1454 NetConn_UpdateCleartime(&conn->incoming_cleartime, cl_rate.integer, cl_rate_burstsize.integer, originallength + 28);
1456 conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes += 8 + 28;
1458 StoreBigLong(temppacket, 8 | NETFLAG_ACK | NetConn_AddCryptoFlag(&conn->crypto));
1459 StoreBigLong(temppacket + 4, sequence);
1460 sendme = Crypto_EncryptPacket(&conn->crypto, temppacket, 8, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer));
1462 NetConn_Write(conn->mysocket, sendme, (int)sendmelen, &conn->peeraddress);
1463 if (sequence == conn->nq.receiveSequence)
1465 conn->lastMessageTime = realtime;
1466 conn->timeout = realtime + newtimeout;
1467 conn->nq.receiveSequence++;
1468 if( conn->receiveMessageLength + length <= (int)sizeof( conn->receiveMessage ) ) {
1469 memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
1470 conn->receiveMessageLength += (int)length;
1472 Con_Printf( "Reliable message (seq: %i) too big for message buffer!\n"
1473 "Dropping the message!\n", sequence );
1474 conn->receiveMessageLength = 0;
1477 if (flags & NETFLAG_EOM)
1479 conn->reliableMessagesReceived++;
1480 length = conn->receiveMessageLength;
1481 conn->receiveMessageLength = 0;
1484 if (conn == cls.netcon)
1486 SZ_Clear(&cl_message);
1487 SZ_Write(&cl_message, conn->receiveMessage, (int)length);
1488 MSG_BeginReading(&cl_message);
1492 SZ_Clear(&sv_message);
1493 SZ_Write(&sv_message, conn->receiveMessage, (int)length);
1494 MSG_BeginReading(&sv_message);
1501 conn->receivedDuplicateCount++;
1509 static void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol)
1512 cls.connect_trying = false;
1514 M_Update_Return_Reason("");
1516 // if we're connecting to a remote server, shut down any local server
1517 if (LHNETADDRESS_GetAddressType(peeraddress) != LHNETADDRESSTYPE_LOOP && sv.active)
1519 SV_LockThreadMutex();
1520 Host_ShutdownServer ();
1521 SV_UnlockThreadMutex();
1523 // allocate a net connection to keep track of things
1524 cls.netcon = NetConn_Open(mysocket, peeraddress);
1525 crypto = &cls.netcon->crypto;
1526 if(cls.crypto.authenticated)
1528 Crypto_FinishInstance(crypto, &cls.crypto);
1529 Con_Printf("%s connection to %s has been established: server is %s@%s%.*s, I am %.*s@%s%.*s\n",
1530 crypto->use_aes ? "Encrypted" : "Authenticated",
1531 cls.netcon->address,
1532 crypto->server_idfp[0] ? crypto->server_idfp : "-",
1533 (crypto->server_issigned || !crypto->server_keyfp[0]) ? "" : "~",
1534 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-",
1535 crypto_keyfp_recommended_length, crypto->client_idfp[0] ? crypto->client_idfp : "-",
1536 (crypto->client_issigned || !crypto->client_keyfp[0]) ? "" : "~",
1537 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-"
1540 Con_Printf("Connection accepted to %s\n", cls.netcon->address);
1541 key_dest = key_game;
1545 cls.demonum = -1; // not in the demo loop now
1546 cls.state = ca_connected;
1547 cls.signon = 0; // need all the signon messages before playing
1548 cls.protocol = initialprotocol;
1549 // reset move sequence numbering on this new connection
1550 cls.servermovesequence = 0;
1551 if (cls.protocol == PROTOCOL_QUAKEWORLD)
1552 Cmd_ForwardStringToServer("new");
1553 if (cls.protocol == PROTOCOL_QUAKE)
1555 // write a keepalive (clc_nop) as it seems to greatly improve the
1556 // chances of connecting to a netquake server
1558 unsigned char buf[4];
1559 memset(&msg, 0, sizeof(msg));
1561 msg.maxsize = sizeof(buf);
1562 MSG_WriteChar(&msg, clc_nop);
1563 NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000, 0, false);
1567 int NetConn_IsLocalGame(void)
1569 if (cls.state == ca_connected && sv.active && cl.maxclients == 1)
1575 static int NetConn_ClientParsePacket_ServerList_ProcessReply(const char *addressstring)
1579 serverlist_entry_t *entry = NULL;
1581 // search the cache for this server and update it
1582 for (n = 0;n < serverlist_cachecount;n++) {
1583 entry = &serverlist_cache[ n ];
1584 if (!strcmp(addressstring, entry->info.cname))
1588 if (n == serverlist_cachecount)
1590 // LAN search doesnt require an answer from the master server so we wont
1591 // know the ping nor will it be initialized already...
1594 if (serverlist_cachecount == SERVERLIST_TOTALSIZE)
1597 if (serverlist_maxcachecount <= serverlist_cachecount)
1599 serverlist_maxcachecount += 64;
1600 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1602 entry = &serverlist_cache[n];
1604 memset(entry, 0, sizeof(*entry));
1605 // store the data the engine cares about (address and ping)
1606 strlcpy(entry->info.cname, addressstring, sizeof(entry->info.cname));
1607 entry->info.ping = 100000;
1608 entry->querytime = realtime;
1609 // if not in the slist menu we should print the server to console
1610 if (serverlist_consoleoutput)
1611 Con_Printf("querying %s\n", addressstring);
1612 ++serverlist_cachecount;
1614 // if this is the first reply from this server, count it as having replied
1615 pingtime = (int)((realtime - entry->querytime) * 1000.0 + 0.5);
1616 pingtime = bound(0, pingtime, 9999);
1617 if (entry->query == SQS_REFRESHING) {
1618 entry->info.ping = pingtime;
1619 entry->query = SQS_QUERIED;
1621 // convert to unsigned to catch the -1
1622 // I still dont like this but its better than the old 10000 magic ping number - as in easier to type and read :( [11/8/2007 Black]
1623 entry->info.ping = min((unsigned) entry->info.ping, (unsigned) pingtime);
1627 // other server info is updated by the caller
1631 static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n)
1633 serverlist_entry_t *entry = &serverlist_cache[n];
1634 serverlist_info_t *info = &entry->info;
1635 // update description strings for engine menu and console output
1636 dpsnprintf(entry->line1, sizeof(serverlist_cache[n].line1), "^%c%5d^7 ^%c%3u^7/%3u %-65.65s", info->ping >= 300 ? '1' : (info->ping >= 200 ? '3' : '7'), (int)info->ping, ((info->numhumans > 0 && info->numhumans < info->maxplayers) ? (info->numhumans >= 4 ? '7' : '3') : '1'), info->numplayers, info->maxplayers, info->name);
1637 dpsnprintf(entry->line2, sizeof(serverlist_cache[n].line2), "^4%-21.21s %-19.19s ^%c%-17.17s^4 %-20.20s", info->cname, info->game,
1639 info->gameversion != gameversion.integer
1642 gameversion_min.integer >= 0 // min/max range set by user/mod?
1643 && gameversion_max.integer >= 0
1644 && gameversion_min.integer <= info->gameversion // version of server in min/max range?
1645 && gameversion_max.integer >= info->gameversion
1648 info->mod, info->map);
1649 if (entry->query == SQS_QUERIED)
1651 if(!serverlist_paused)
1652 ServerList_ViewList_Remove(entry);
1654 // if not in the slist menu we should print the server to console (if wanted)
1655 else if( serverlist_consoleoutput )
1656 Con_Printf("%s\n%s\n", serverlist_cache[n].line1, serverlist_cache[n].line2);
1657 // and finally, update the view set
1658 if(!serverlist_paused)
1659 ServerList_ViewList_Insert( entry );
1660 // update the entry's state
1661 serverlist_cache[n].query = SQS_QUERIED;
1664 // returns true, if it's sensible to continue the processing
1665 static qboolean NetConn_ClientParsePacket_ServerList_PrepareQuery( int protocol, const char *ipstring, qboolean isfavorite ) {
1667 serverlist_entry_t *entry;
1669 // ignore the rest of the message if the serverlist is full
1670 if( serverlist_cachecount == SERVERLIST_TOTALSIZE )
1672 // also ignore it if we have already queried it (other master server response)
1673 for( n = 0 ; n < serverlist_cachecount ; n++ )
1674 if( !strcmp( ipstring, serverlist_cache[ n ].info.cname ) )
1677 if( n < serverlist_cachecount ) {
1678 // the entry has already been queried once or
1682 if (serverlist_maxcachecount <= n)
1684 serverlist_maxcachecount += 64;
1685 serverlist_cache = (serverlist_entry_t *)Mem_Realloc(netconn_mempool, (void *)serverlist_cache, sizeof(serverlist_entry_t) * serverlist_maxcachecount);
1688 entry = &serverlist_cache[n];
1690 memset(entry, 0, sizeof(*entry));
1691 entry->protocol = protocol;
1692 // store the data the engine cares about (address and ping)
1693 strlcpy (entry->info.cname, ipstring, sizeof(entry->info.cname));
1695 entry->info.isfavorite = isfavorite;
1697 // no, then reset the ping right away
1698 entry->info.ping = -1;
1699 // we also want to increase the serverlist_cachecount then
1700 serverlist_cachecount++;
1703 entry->query = SQS_QUERYING;
1708 static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *senderaddress, const unsigned char *data, int length, qboolean isextended)
1711 if (serverlist_consoleoutput)
1712 Con_Printf("received DarkPlaces %sserver list...\n", isextended ? "extended " : "");
1715 char ipstring [128];
1718 if (data[0] == '\\')
1720 unsigned short port = data[5] * 256 + data[6];
1722 if (port != 0 && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF))
1723 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%hu", data[1], data[2], data[3], data[4], port);
1725 // move on to next address in packet
1730 else if (data[0] == '/' && isextended && length >= 19)
1732 unsigned short port = data[17] * 256 + data[18];
1740 /// \TODO: make some basic checks of the IP address (broadcast, ...)
1742 ifname = LHNETADDRESS_GetInterfaceName(senderaddress, ifnamebuf, sizeof(ifnamebuf));
1745 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x%%%s]:%hu",
1746 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1747 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1753 dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x]:%hu",
1754 (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8],
1755 (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16],
1760 // move on to next address in packet
1766 Con_Print("Error while parsing the server list\n");
1770 if (serverlist_consoleoutput && developer_networking.integer)
1771 Con_Printf("Requesting info from DarkPlaces server %s\n", ipstring);
1773 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, ipstring, false ) ) {
1779 // begin or resume serverlist queries
1780 serverlist_querysleep = false;
1781 serverlist_querywaittime = realtime + 3;
1785 static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
1787 qboolean fromserver;
1789 char *string, addressstring2[128];
1790 char stringbuf[16384];
1791 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
1794 char infostringvalue[MAX_INPUTLINE];
1799 // quakeworld ingame packet
1800 fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress);
1802 // convert the address to a string incase we need it
1803 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
1805 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
1807 // received a command string - strip off the packaging and put it
1808 // into our string buffer with NULL termination
1811 length = min(length, (int)sizeof(stringbuf) - 1);
1812 memcpy(stringbuf, data, length);
1813 stringbuf[length] = 0;
1816 if (developer_networking.integer)
1818 Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
1819 Com_HexDumpToConsole(data, length);
1822 sendlength = sizeof(senddata) - 4;
1823 switch(Crypto_ClientParsePacket(string, length, senddata+4, &sendlength, peeraddress))
1825 case CRYPTO_NOMATCH:
1831 memcpy(senddata, "\377\377\377\377", 4);
1832 NetConn_Write(mysocket, senddata, (int)sendlength+4, peeraddress);
1835 case CRYPTO_DISCARD:
1838 memcpy(senddata, "\377\377\377\377", 4);
1839 NetConn_Write(mysocket, senddata, (int)sendlength+4, peeraddress);
1843 case CRYPTO_REPLACE:
1844 string = senddata+4;
1845 length = (int)sendlength;
1849 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying)
1852 for (j = 0;j < MAX_RCONS;j++)
1854 // note: this value from i is used outside the loop too...
1855 i = (cls.rcon_ringpos + j) % MAX_RCONS;
1856 if(cls.rcon_commands[i][0])
1857 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[i]))
1866 dpsnprintf(argbuf, sizeof(argbuf), "%s %s", string + 10, cls.rcon_commands[i]);
1867 memcpy(buf, "\377\377\377\377srcon HMAC-MD4 CHALLENGE ", 29);
1869 e = strchr(rcon_password.string, ' ');
1870 n = e ? e-rcon_password.string : (int)strlen(rcon_password.string);
1872 if(HMAC_MDFOUR_16BYTES((unsigned char *) (buf + 29), (unsigned char *) argbuf, (int)strlen(argbuf), (unsigned char *) rcon_password.string, n))
1876 strlcpy(buf + 46, argbuf, sizeof(buf) - 46);
1877 NetConn_Write(mysocket, buf, 46 + (int)strlen(buf + 46), peeraddress);
1878 cls.rcon_commands[i][0] = 0;
1881 for (k = 0;k < MAX_RCONS;k++)
1882 if(cls.rcon_commands[k][0])
1883 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[k]))
1888 NetConn_WriteString(mysocket, "\377\377\377\377getchallenge", peeraddress);
1889 // extend the timeout on other requests as we asked for a challenge
1890 for (l = 0;l < MAX_RCONS;l++)
1891 if(cls.rcon_commands[l][0])
1892 if (!LHNETADDRESS_Compare(peeraddress, &cls.rcon_addresses[l]))
1893 cls.rcon_timeout[l] = realtime + rcon_secure_challengetimeout.value;
1896 return true; // we used up the challenge, so we can't use this oen for connecting now anyway
1900 if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying)
1902 // darkplaces or quake3
1903 char protocolnames[1400];
1904 Con_DPrintf("\"%s\" received, sending connect request back to %s\n", string, addressstring2);
1905 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address)) {
1906 Con_DPrintf("challenge message from wrong server %s\n", addressstring2);
1909 Protocol_Names(protocolnames, sizeof(protocolnames));
1911 M_Update_Return_Reason("Got challenge response");
1913 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
1914 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
1915 // TODO: add userinfo stuff here instead of using NQ commands?
1916 memcpy(senddata, "\377\377\377\377", 4);
1917 dpsnprintf(senddata+4, sizeof(senddata)-4, "connect\\protocol\\darkplaces 3\\protocols\\%s%s\\challenge\\%s", protocolnames, cls.connect_userinfo, string + 10);
1918 NetConn_WriteString(mysocket, senddata, peeraddress);
1921 if (length == 6 && !memcmp(string, "accept", 6) && cls.connect_trying)
1923 // darkplaces or quake3
1924 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address)) {
1925 Con_DPrintf("accept message from wrong server %s\n", addressstring2);
1929 M_Update_Return_Reason("Accepted");
1931 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_DARKPLACES3);
1934 if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying)
1936 char rejectreason[128];
1937 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address)) {
1938 Con_DPrintf("reject message from wrong server %s\n", addressstring2);
1941 cls.connect_trying = false;
1943 length = min(length - 7, (int)sizeof(rejectreason) - 1);
1944 memcpy(rejectreason, string, length);
1945 rejectreason[length] = 0;
1947 M_Update_Return_Reason(rejectreason);
1952 if (length >= 15 && !memcmp(string, "statusResponse\x0A", 15))
1954 serverlist_info_t *info;
1959 // search the cache for this server and update it
1960 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
1964 info = &serverlist_cache[n].info;
1969 info->qcstatus[0] = 0;
1970 info->players[0] = 0;
1971 info->protocol = -1;
1972 info->numplayers = 0;
1974 info->maxplayers = 0;
1975 info->gameversion = 0;
1977 p = strchr(string, '\n');
1980 *p = 0; // cut off the string there
1984 Con_Printf("statusResponse without players block?\n");
1986 if ((s = InfoString_GetValue(string, "gamename" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->game, s, sizeof (info->game));
1987 if ((s = InfoString_GetValue(string, "modname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
1988 if ((s = InfoString_GetValue(string, "mapname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->map , s, sizeof (info->map ));
1989 if ((s = InfoString_GetValue(string, "hostname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->name, s, sizeof (info->name));
1990 if ((s = InfoString_GetValue(string, "protocol" , infostringvalue, sizeof(infostringvalue))) != NULL) info->protocol = atoi(s);
1991 if ((s = InfoString_GetValue(string, "clients" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numplayers = atoi(s);
1992 if ((s = InfoString_GetValue(string, "bots" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numbots = atoi(s);
1993 if ((s = InfoString_GetValue(string, "sv_maxclients", infostringvalue, sizeof(infostringvalue))) != NULL) info->maxplayers = atoi(s);
1994 if ((s = InfoString_GetValue(string, "gameversion" , infostringvalue, sizeof(infostringvalue))) != NULL) info->gameversion = atoi(s);
1995 if ((s = InfoString_GetValue(string, "qcstatus" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
1996 if (p != NULL) strlcpy(info->players, p, sizeof(info->players));
1997 info->numhumans = info->numplayers - max(0, info->numbots);
1998 info->freeslots = info->maxplayers - info->numplayers;
2000 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2004 if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
2006 serverlist_info_t *info;
2010 // search the cache for this server and update it
2011 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2015 info = &serverlist_cache[n].info;
2020 info->qcstatus[0] = 0;
2021 info->players[0] = 0;
2022 info->protocol = -1;
2023 info->numplayers = 0;
2025 info->maxplayers = 0;
2026 info->gameversion = 0;
2028 if ((s = InfoString_GetValue(string, "gamename" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->game, s, sizeof (info->game));
2029 if ((s = InfoString_GetValue(string, "modname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));
2030 if ((s = InfoString_GetValue(string, "mapname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->map , s, sizeof (info->map ));
2031 if ((s = InfoString_GetValue(string, "hostname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->name, s, sizeof (info->name));
2032 if ((s = InfoString_GetValue(string, "protocol" , infostringvalue, sizeof(infostringvalue))) != NULL) info->protocol = atoi(s);
2033 if ((s = InfoString_GetValue(string, "clients" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numplayers = atoi(s);
2034 if ((s = InfoString_GetValue(string, "bots" , infostringvalue, sizeof(infostringvalue))) != NULL) info->numbots = atoi(s);
2035 if ((s = InfoString_GetValue(string, "sv_maxclients", infostringvalue, sizeof(infostringvalue))) != NULL) info->maxplayers = atoi(s);
2036 if ((s = InfoString_GetValue(string, "gameversion" , infostringvalue, sizeof(infostringvalue))) != NULL) info->gameversion = atoi(s);
2037 if ((s = InfoString_GetValue(string, "qcstatus" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->qcstatus, s, sizeof(info->qcstatus));
2038 info->numhumans = info->numplayers - max(0, info->numbots);
2039 info->freeslots = info->maxplayers - info->numplayers;
2041 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2045 if (!strncmp(string, "getserversResponse\\", 19) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
2047 // Extract the IP addresses
2050 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, false);
2053 if (!strncmp(string, "getserversExtResponse", 21) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
2055 // Extract the IP addresses
2058 NetConn_ClientParsePacket_ServerList_ParseDPList(peeraddress, data, length, true);
2061 if (!memcmp(string, "d\n", 2) && serverlist_cachecount < SERVERLIST_TOTALSIZE)
2063 // Extract the IP addresses
2067 if (serverlist_consoleoutput)
2068 Con_Printf("received QuakeWorld server list from %s...\n", addressstring2);
2069 while (length >= 6 && (data[0] != 0xFF || data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF) && data[4] * 256 + data[5] != 0)
2071 dpsnprintf (ipstring, sizeof (ipstring), "%u.%u.%u.%u:%u", data[0], data[1], data[2], data[3], data[4] * 256 + data[5]);
2072 if (serverlist_consoleoutput && developer_networking.integer)
2073 Con_Printf("Requesting info from QuakeWorld server %s\n", ipstring);
2075 if( !NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, ipstring, false ) ) {
2079 // move on to next address in packet
2083 // begin or resume serverlist queries
2084 serverlist_querysleep = false;
2085 serverlist_querywaittime = realtime + 3;
2089 if (!strncmp(string, "extResponse ", 12))
2091 ++cl_net_extresponse_count;
2092 if(cl_net_extresponse_count > NET_EXTRESPONSE_MAX)
2093 cl_net_extresponse_count = NET_EXTRESPONSE_MAX;
2094 cl_net_extresponse_last = (cl_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
2095 dpsnprintf(cl_net_extresponse[cl_net_extresponse_last], sizeof(cl_net_extresponse[cl_net_extresponse_last]), "\"%s\" %s", addressstring2, string + 12);
2098 if (!strncmp(string, "ping", 4))
2100 if (developer_extra.integer)
2101 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
2102 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
2105 if (!strncmp(string, "ack", 3))
2107 // QuakeWorld compatibility
2108 if (length > 1 && string[0] == 'c' && (string[1] == '-' || (string[1] >= '0' && string[1] <= '9')) && cls.connect_trying)
2110 // challenge message
2111 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address)) {
2112 Con_DPrintf("c message from wrong server %s\n", addressstring2);
2115 Con_Printf("challenge %s received, sending QuakeWorld connect request back to %s\n", string + 1, addressstring2);
2117 M_Update_Return_Reason("Got QuakeWorld challenge response");
2119 cls.qw_qport = qport.integer;
2120 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
2121 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
2122 memcpy(senddata, "\377\377\377\377", 4);
2123 dpsnprintf(senddata+4, sizeof(senddata)-4, "connect %i %i %i \"%s%s\"\n", 28, cls.qw_qport, atoi(string + 1), cls.userinfo, cls.connect_userinfo);
2124 NetConn_WriteString(mysocket, senddata, peeraddress);
2127 if (length >= 1 && string[0] == 'j' && cls.connect_trying)
2130 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address)) {
2131 Con_DPrintf("j message from wrong server %s\n", addressstring2);
2135 M_Update_Return_Reason("QuakeWorld Accepted");
2137 NetConn_ConnectionEstablished(mysocket, peeraddress, PROTOCOL_QUAKEWORLD);
2140 if (length > 2 && !memcmp(string, "n\\", 2))
2143 serverlist_info_t *info;
2147 if (serverlist_consoleoutput && developer_networking.integer >= 2)
2148 Con_Printf("QW server status from server at %s:\n%s\n", addressstring2, string + 1);
2151 // search the cache for this server and update it
2152 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2156 info = &serverlist_cache[n].info;
2157 strlcpy(info->game, "QuakeWorld", sizeof(info->game));
2158 if ((s = InfoString_GetValue(string, "*gamedir" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->mod , s, sizeof (info->mod ));else info->mod[0] = 0;
2159 if ((s = InfoString_GetValue(string, "map" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->map , s, sizeof (info->map ));else info->map[0] = 0;
2160 if ((s = InfoString_GetValue(string, "hostname" , infostringvalue, sizeof(infostringvalue))) != NULL) strlcpy(info->name, s, sizeof (info->name));else info->name[0] = 0;
2162 info->numplayers = 0; // updated below
2163 info->numhumans = 0; // updated below
2164 if ((s = InfoString_GetValue(string, "maxclients" , infostringvalue, sizeof(infostringvalue))) != NULL) info->maxplayers = atoi(s);else info->maxplayers = 0;
2165 if ((s = InfoString_GetValue(string, "gameversion" , infostringvalue, sizeof(infostringvalue))) != NULL) info->gameversion = atoi(s);else info->gameversion = 0;
2167 // count active players on server
2168 // (we could gather more info, but we're just after the number)
2169 s = strchr(string, '\n');
2173 while (s < string + length)
2175 for (;s < string + length && *s != '\n';s++)
2177 if (s >= string + length)
2185 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2189 if (string[0] == 'n')
2191 // qw print command, used by rcon replies too
2192 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address) && LHNETADDRESS_Compare(peeraddress, &cls.rcon_address)) {
2193 Con_DPrintf("n message from wrong server %s\n", addressstring2);
2196 Con_Printf("QW print command from server at %s:\n%s\n", addressstring2, string + 1);
2198 // we may not have liked the packet, but it was a command packet, so
2199 // we're done processing this packet now
2202 // quakeworld ingame packet
2203 if (fromserver && cls.protocol == PROTOCOL_QUAKEWORLD && length >= 8 && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2206 CL_ParseServerMessage();
2209 // netquake control packets, supported for compatibility only
2210 if (length >= 5 && BuffBigLong(data) == ((int)NETFLAG_CTL | length) && !ENCRYPTION_REQUIRED)
2214 serverlist_info_t *info;
2219 SZ_Clear(&cl_message);
2220 SZ_Write(&cl_message, data, length);
2221 MSG_BeginReading(&cl_message);
2222 c = MSG_ReadByte(&cl_message);
2226 if (developer_extra.integer)
2227 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
2228 if (cls.connect_trying)
2230 lhnetaddress_t clientportaddress;
2231 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address)) {
2232 Con_DPrintf("CCREP_ACCEPT message from wrong server %s\n", addressstring2);
2235 clientportaddress = *peeraddress;
2236 LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong(&cl_message));
2237 // extra ProQuake stuff
2239 cls.proquake_servermod = MSG_ReadByte(&cl_message); // MOD_PROQUAKE
2241 cls.proquake_servermod = 0;
2243 cls.proquake_serverversion = MSG_ReadByte(&cl_message); // version * 10
2245 cls.proquake_serverversion = 0;
2247 cls.proquake_serverflags = MSG_ReadByte(&cl_message); // flags (mainly PQF_CHEATFREE)
2249 cls.proquake_serverflags = 0;
2250 if (cls.proquake_servermod == 1)
2251 Con_Printf("Connected to ProQuake %.1f server, enabling precise aim\n", cls.proquake_serverversion / 10.0f);
2252 // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command)
2253 InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2);
2255 M_Update_Return_Reason("Accepted");
2257 NetConn_ConnectionEstablished(mysocket, &clientportaddress, PROTOCOL_QUAKE);
2261 if (developer_extra.integer) {
2262 Con_DPrintf("CCREP_REJECT message from wrong server %s\n", addressstring2);
2265 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.connect_address))
2267 cls.connect_trying = false;
2269 M_Update_Return_Reason((char *)MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)));
2272 case CCREP_SERVER_INFO:
2273 if (developer_extra.integer)
2274 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
2276 // LadyHavoc: because the quake server may report weird addresses
2277 // we just ignore it and keep the real address
2278 MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring));
2279 // search the cache for this server and update it
2280 n = NetConn_ClientParsePacket_ServerList_ProcessReply(addressstring2);
2284 info = &serverlist_cache[n].info;
2285 strlcpy(info->game, "Quake", sizeof(info->game));
2286 strlcpy(info->mod , "", sizeof(info->mod)); // mod name is not specified
2287 strlcpy(info->name, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(info->name));
2288 strlcpy(info->map , MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(info->map));
2289 info->numplayers = MSG_ReadByte(&cl_message);
2290 info->maxplayers = MSG_ReadByte(&cl_message);
2291 info->protocol = MSG_ReadByte(&cl_message);
2293 NetConn_ClientParsePacket_ServerList_UpdateCache(n);
2296 case CCREP_RCON: // RocketGuy: ProQuake rcon support
2297 if (net_sourceaddresscheck.integer && LHNETADDRESS_Compare(peeraddress, &cls.rcon_address)) {
2298 Con_DPrintf("CCREP_RCON message from wrong server %s\n", addressstring2);
2301 if (developer_extra.integer)
2302 Con_DPrintf("Datagram_ParseConnectionless: received CCREP_RCON from %s.\n", addressstring2);
2304 Con_Printf("%s\n", MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)));
2306 case CCREP_PLAYER_INFO:
2307 // we got a CCREP_PLAYER_INFO??
2308 //if (developer_extra.integer)
2309 Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
2311 case CCREP_RULE_INFO:
2312 // we got a CCREP_RULE_INFO??
2313 //if (developer_extra.integer)
2314 Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
2319 SZ_Clear(&cl_message);
2320 // we may not have liked the packet, but it was a valid control
2321 // packet, so we're done processing this packet now
2325 if (fromserver && length >= (int)NET_HEADERSIZE && (ret = NetConn_ReceivedMessage(cls.netcon, data, length, cls.protocol, net_messagetimeout.value)) == 2)
2326 CL_ParseServerMessage();
2331 void NetConn_QueryQueueFrame(void)
2337 static double querycounter = 0;
2339 if(!net_slist_pause.integer && serverlist_paused)
2340 ServerList_RebuildViewList();
2341 serverlist_paused = net_slist_pause.integer != 0;
2343 if (serverlist_querysleep)
2346 // apply a cool down time after master server replies,
2347 // to avoid messing up the ping times on the servers
2348 if (serverlist_querywaittime > realtime)
2351 // each time querycounter reaches 1.0 issue a query
2352 querycounter += cl.realframetime * net_slist_queriespersecond.value;
2353 maxqueries = (int)querycounter;
2354 maxqueries = bound(0, maxqueries, net_slist_queriesperframe.integer);
2355 querycounter -= maxqueries;
2357 if( maxqueries == 0 ) {
2361 // scan serverlist and issue queries as needed
2362 serverlist_querysleep = true;
2364 timeouttime = realtime - net_slist_timeout.value;
2365 for( index = 0, queries = 0 ; index < serverlist_cachecount && queries < maxqueries ; index++ )
2367 serverlist_entry_t *entry = &serverlist_cache[ index ];
2368 if( entry->query != SQS_QUERYING && entry->query != SQS_REFRESHING )
2373 serverlist_querysleep = false;
2374 if( entry->querycounter != 0 && entry->querytime > timeouttime )
2379 if( entry->querycounter != (unsigned) net_slist_maxtries.integer )
2381 lhnetaddress_t address;
2384 LHNETADDRESS_FromString(&address, entry->info.cname, 0);
2385 if (entry->protocol == PROTOCOL_QUAKEWORLD)
2387 for (socket = 0; socket < cl_numsockets ; socket++)
2388 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377status\n", &address);
2392 for (socket = 0; socket < cl_numsockets ; socket++)
2393 NetConn_WriteString(cl_sockets[socket], "\377\377\377\377getstatus", &address);
2396 // update the entry fields
2397 entry->querytime = realtime;
2398 entry->querycounter++;
2400 // if not in the slist menu we should print the server to console
2401 if (serverlist_consoleoutput)
2402 Con_Printf("querying %25s (%i. try)\n", entry->info.cname, entry->querycounter);
2408 // have we tried to refresh this server?
2409 if( entry->query == SQS_REFRESHING ) {
2410 // yes, so update the reply count (since its not responding anymore)
2412 if(!serverlist_paused)
2413 ServerList_ViewList_Remove(entry);
2415 entry->query = SQS_TIMEDOUT;
2421 void NetConn_ClientFrame(void)
2424 lhnetaddress_t peeraddress;
2425 unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
2426 NetConn_UpdateSockets();
2427 if (cls.connect_trying && cls.connect_nextsendtime < realtime)
2430 if (cls.connect_remainingtries == 0)
2431 M_Update_Return_Reason("Connect: Waiting 10 seconds for reply");
2433 cls.connect_nextsendtime = realtime + 1;
2434 cls.connect_remainingtries--;
2435 if (cls.connect_remainingtries <= -10)
2437 cls.connect_trying = false;
2439 M_Update_Return_Reason("Connect: Failed");
2443 // try challenge first (newer DP server or QW)
2444 NetConn_WriteString(cls.connect_mysocket, "\377\377\377\377getchallenge", &cls.connect_address);
2445 // then try netquake as a fallback (old server, or netquake)
2446 SZ_Clear(&cl_message);
2447 // save space for the header, filled in later
2448 MSG_WriteLong(&cl_message, 0);
2449 MSG_WriteByte(&cl_message, CCREQ_CONNECT);
2450 MSG_WriteString(&cl_message, "QUAKE");
2451 MSG_WriteByte(&cl_message, NET_PROTOCOL_VERSION);
2452 // extended proquake stuff
2453 MSG_WriteByte(&cl_message, 1); // mod = MOD_PROQUAKE
2454 // this version matches ProQuake 3.40, the first version to support
2455 // the NAT fix, and it only supports the NAT fix for ProQuake 3.40 or
2456 // higher clients, so we pretend we are that version...
2457 MSG_WriteByte(&cl_message, 34); // version * 10
2458 MSG_WriteByte(&cl_message, 0); // flags
2459 MSG_WriteLong(&cl_message, 0); // password
2460 // write the packetsize now...
2461 StoreBigLong(cl_message.data, NETFLAG_CTL | (cl_message.cursize & NETFLAG_LENGTH_MASK));
2462 NetConn_Write(cls.connect_mysocket, cl_message.data, cl_message.cursize, &cls.connect_address);
2463 SZ_Clear(&cl_message);
2465 for (i = 0;i < cl_numsockets;i++)
2467 while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
2469 // R_TimeReport("clientreadnetwork");
2470 NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
2471 // R_TimeReport("clientparsepacket");
2475 NetConn_QueryQueueFrame();
2477 if (cls.netcon && realtime > cls.netcon->timeout && !sv.active)
2479 Con_Print("Connection timed out\n");
2481 SV_LockThreadMutex();
2482 Host_ShutdownServer ();
2483 SV_UnlockThreadMutex();
2487 static void NetConn_BuildChallengeString(char *buffer, int bufferlength)
2491 for (i = 0;i < bufferlength - 1;i++)
2495 c = rand () % (127 - 33) + 33;
2496 } while (c == '\\' || c == ';' || c == '"' || c == '%' || c == '/');
2502 /// (div0) build the full response only if possible; better a getinfo response than no response at all if getstatus won't fit
2503 static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg, size_t out_size, qboolean fullstatus)
2505 prvm_prog_t *prog = SVVM_prog;
2507 unsigned int nb_clients = 0, nb_bots = 0, i;
2510 const char *crypto_idstring;
2511 const char *worldstatusstr;
2513 // How many clients are there?
2514 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2516 if (svs.clients[i].active)
2519 if (!svs.clients[i].netconnection)
2525 worldstatusstr = PRVM_GetString(prog, PRVM_serverglobalstring(worldstatus));
2526 if(worldstatusstr && *worldstatusstr)
2531 for(q = worldstatusstr; *q && (size_t)(p - qcstatus) < (sizeof(qcstatus) - 1); ++q)
2532 if(*q != '\\' && *q != '\n')
2537 /// \TODO: we should add more information for the full status string
2538 crypto_idstring = Crypto_GetInfoResponseDataString();
2539 length = dpsnprintf(out_msg, out_size,
2540 "\377\377\377\377%s\x0A"
2541 "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d"
2542 "\\clients\\%d\\bots\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d"
2547 fullstatus ? "statusResponse" : "infoResponse",
2548 gamenetworkfiltername, com_modname, gameversion.integer, svs.maxclients,
2549 nb_clients, nb_bots, sv.worldbasename, hostname.string, NET_PROTOCOL_VERSION,
2550 *qcstatus ? "\\qcstatus\\" : "", qcstatus,
2551 challenge ? "\\challenge\\" : "", challenge ? challenge : "",
2552 crypto_idstring ? "\\d0_blind_id\\" : "", crypto_idstring ? crypto_idstring : "",
2553 fullstatus ? "\n" : "");
2555 // Make sure it fits in the buffer
2565 savelength = length;
2567 ptr = out_msg + length;
2568 left = (int)out_size - length;
2570 for (i = 0;i < (unsigned int)svs.maxclients;i++)
2572 client_t *client = &svs.clients[i];
2575 int nameind, cleanind, pingvalue;
2577 char cleanname [sizeof(client->name)];
2578 const char *statusstr;
2581 // Remove all characters '"' and '\' in the player name
2586 curchar = client->name[nameind++];
2587 if (curchar != '"' && curchar != '\\')
2589 cleanname[cleanind++] = curchar;
2590 if (cleanind == sizeof(cleanname) - 1)
2593 } while (curchar != '\0');
2594 cleanname[cleanind] = 0; // cleanind is always a valid index even at this point
2596 pingvalue = (int)(client->ping * 1000.0f);
2597 if(client->netconnection)
2598 pingvalue = bound(1, pingvalue, 9999);
2603 ed = PRVM_EDICT_NUM(i + 1);
2604 statusstr = PRVM_GetString(prog, PRVM_serveredictstring(ed, clientstatus));
2605 if(statusstr && *statusstr)
2610 for(q = statusstr; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q)
2611 if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q))
2616 if (IS_NEXUIZ_DERIVED(gamemode) && (teamplay.integer > 0))
2618 if(client->frags == -666) // spectator
2619 strlcpy(teambuf, " 0", sizeof(teambuf));
2620 else if(client->colors == 0x44) // red team
2621 strlcpy(teambuf, " 1", sizeof(teambuf));
2622 else if(client->colors == 0xDD) // blue team
2623 strlcpy(teambuf, " 2", sizeof(teambuf));
2624 else if(client->colors == 0xCC) // yellow team
2625 strlcpy(teambuf, " 3", sizeof(teambuf));
2626 else if(client->colors == 0x99) // pink team
2627 strlcpy(teambuf, " 4", sizeof(teambuf));
2629 strlcpy(teambuf, " 0", sizeof(teambuf));
2634 // note: team number is inserted according to SoF2 protocol
2636 length = dpsnprintf(ptr, left, "%s %d%s \"%s\"\n",
2642 length = dpsnprintf(ptr, left, "%d %d%s \"%s\"\n",
2651 // turn it into an infoResponse!
2652 out_msg[savelength] = 0;
2653 memcpy(out_msg + 4, "infoResponse\x0A", 13);
2654 memmove(out_msg + 17, out_msg + 19, savelength - 19);
2669 static qboolean NetConn_PreventFlood(lhnetaddress_t *peeraddress, server_floodaddress_t *floodlist, size_t floodlength, double floodtime, qboolean renew)
2671 size_t floodslotnum, bestfloodslotnum;
2672 double bestfloodtime;
2673 lhnetaddress_t noportpeeraddress;
2674 // see if this is a connect flood
2675 noportpeeraddress = *peeraddress;
2676 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2677 bestfloodslotnum = 0;
2678 bestfloodtime = floodlist[bestfloodslotnum].lasttime;
2679 for (floodslotnum = 0;floodslotnum < floodlength;floodslotnum++)
2681 if (bestfloodtime >= floodlist[floodslotnum].lasttime)
2683 bestfloodtime = floodlist[floodslotnum].lasttime;
2684 bestfloodslotnum = floodslotnum;
2686 if (floodlist[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &floodlist[floodslotnum].address) == 0)
2688 // this address matches an ongoing flood address
2689 if (realtime < floodlist[floodslotnum].lasttime + floodtime)
2693 // renew the ban on this address so it does not expire
2694 // until the flood has subsided
2695 floodlist[floodslotnum].lasttime = realtime;
2697 //Con_Printf("Flood detected!\n");
2700 // the flood appears to have subsided, so allow this
2701 bestfloodslotnum = floodslotnum; // reuse the same slot
2705 // begin a new timeout on this address
2706 floodlist[bestfloodslotnum].address = noportpeeraddress;
2707 floodlist[bestfloodslotnum].lasttime = realtime;
2708 //Con_Printf("Flood detection initiated!\n");
2712 void NetConn_ClearFlood(lhnetaddress_t *peeraddress, server_floodaddress_t *floodlist, size_t floodlength)
2714 size_t floodslotnum;
2715 lhnetaddress_t noportpeeraddress;
2716 // see if this is a connect flood
2717 noportpeeraddress = *peeraddress;
2718 LHNETADDRESS_SetPort(&noportpeeraddress, 0);
2719 for (floodslotnum = 0;floodslotnum < floodlength;floodslotnum++)
2721 if (floodlist[floodslotnum].lasttime && LHNETADDRESS_Compare(&noportpeeraddress, &floodlist[floodslotnum].address) == 0)
2723 // this address matches an ongoing flood address
2725 floodlist[floodslotnum].address.addresstype = LHNETADDRESSTYPE_NONE;
2726 floodlist[floodslotnum].lasttime = 0;
2727 //Con_Printf("Flood cleared!\n");
2732 typedef qboolean (*rcon_matchfunc_t) (lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen);
2734 static qboolean hmac_mdfour_time_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2740 Con_Print("^4LOGIC ERROR: RCon_Authenticate should never call the comparator with an empty password. Please report.\n");
2744 t1 = (long) time(NULL);
2745 t2 = strtol(s, NULL, 0);
2746 if(abs(t1 - t2) > rcon_secure_maxdiff.integer)
2749 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, (int)strlen(password)))
2752 return !memcmp(mdfourbuf, hash, 16);
2755 static qboolean hmac_mdfour_challenge_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2761 Con_Print("^4LOGIC ERROR: RCon_Authenticate should never call the comparator with an empty password. Please report.\n");
2765 if(slen < (int)(sizeof(challenges[0].string)) - 1)
2768 // validate the challenge
2769 for (i = 0;i < MAX_CHALLENGES;i++)
2770 if(challenges[i].time > 0)
2771 if (!LHNETADDRESS_Compare(peeraddress, &challenges[i].address) && !strncmp(challenges[i].string, s, sizeof(challenges[0].string) - 1))
2773 // if the challenge is not recognized, drop the packet
2774 if (i == MAX_CHALLENGES)
2777 if(!HMAC_MDFOUR_16BYTES((unsigned char *) mdfourbuf, (unsigned char *) s, slen, (unsigned char *) password, (int)strlen(password)))
2780 if(memcmp(mdfourbuf, hash, 16))
2783 // unmark challenge to prevent replay attacks
2784 challenges[i].time = 0;
2789 static qboolean plaintext_matching(lhnetaddress_t *peeraddress, const char *password, const char *hash, const char *s, int slen)
2792 Con_Print("^4LOGIC ERROR: RCon_Authenticate should never call the comparator with an empty password. Please report.\n");
2796 return !strcmp(password, hash);
2799 /// returns a string describing the user level, or NULL for auth failure
2800 static const char *RCon_Authenticate(lhnetaddress_t *peeraddress, const char *password, const char *s, const char *endpos, rcon_matchfunc_t comparator, const char *cs, int cslen)
2802 const char *text, *userpass_start, *userpass_end, *userpass_startpass;
2803 static char buf[MAX_INPUTLINE];
2805 qboolean restricted = false;
2806 qboolean have_usernames = false;
2807 static char vabuf[1024];
2809 userpass_start = rcon_password.string;
2810 while((userpass_end = strchr(userpass_start, ' ')))
2812 have_usernames = true;
2813 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2814 if(buf[0]) // Ignore empty entries due to leading/duplicate space.
2815 if(comparator(peeraddress, buf, password, cs, cslen))
2817 userpass_start = userpass_end + 1;
2819 if(userpass_start[0]) // Ignore empty trailing entry due to trailing space or password not set.
2821 userpass_end = userpass_start + strlen(userpass_start);
2822 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2827 have_usernames = false;
2828 userpass_start = rcon_restricted_password.string;
2829 while((userpass_end = strchr(userpass_start, ' ')))
2831 have_usernames = true;
2832 strlcpy(buf, userpass_start, ((size_t)(userpass_end-userpass_start) >= sizeof(buf)) ? (int)(sizeof(buf)) : (int)(userpass_end-userpass_start+1));
2833 if(buf[0]) // Ignore empty entries due to leading/duplicate space.
2834 if(comparator(peeraddress, buf, password, cs, cslen))
2836 userpass_start = userpass_end + 1;
2838 if(userpass_start[0]) // Ignore empty trailing entry due to trailing space or password not set.
2840 userpass_end = userpass_start + strlen(userpass_start);
2841 if(comparator(peeraddress, userpass_start, password, cs, cslen))
2845 return NULL; // DENIED
2848 for(text = s; text != endpos; ++text)
2849 if((signed char) *text > 0 && ((signed char) *text < (signed char) ' ' || *text == ';'))
2850 return NULL; // block possible exploits against the parser/alias expansion
2854 size_t l = strlen(s);
2857 hasquotes = (strchr(s, '"') != NULL);
2858 // sorry, we can't allow these substrings in wildcard expressions,
2859 // as they can mess with the argument counts
2860 text = rcon_restricted_commands.string;
2861 while(COM_ParseToken_Console(&text))
2863 // com_token now contains a pattern to check for...
2864 if(strchr(com_token, '*') || strchr(com_token, '?')) // wildcard expression, * can only match a SINGLE argument
2867 if(matchpattern_with_separator(s, com_token, true, " ", true)) // note how we excluded tab, newline etc. above
2870 else if(strchr(com_token, ' ')) // multi-arg expression? must match in whole
2872 if(!strcmp(com_token, s))
2875 else // single-arg expression? must match the beginning of the command
2877 if(!strcmp(com_token, s))
2879 if(!memcmp(va(vabuf, sizeof(vabuf), "%s ", com_token), s, strlen(com_token) + 1))
2883 // if we got here, nothing matched!
2891 userpass_startpass = strchr(userpass_start, ':');
2892 if(have_usernames && userpass_startpass && userpass_startpass < userpass_end)
2893 return va(vabuf, sizeof(vabuf), "%srcon (username %.*s)", restricted ? "restricted " : "", (int)(userpass_startpass-userpass_start), userpass_start);
2895 return va(vabuf, sizeof(vabuf), "%srcon", restricted ? "restricted " : "");
2898 static void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos, qboolean proquakeprotocol)
2902 // looks like a legitimate rcon command with the correct password
2903 const char *s_ptr = s;
2904 Con_Printf("server received %s command from %s: ", userlevel, host_client ? host_client->name : addressstring2);
2905 while(s_ptr != endpos)
2907 size_t l = strlen(s_ptr);
2909 Con_Printf(" %s;", s_ptr);
2914 if (!host_client || !host_client->netconnection || LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
2915 Con_Rcon_Redirect_Init(mysocket, peeraddress, proquakeprotocol);
2918 size_t l = strlen(s);
2921 client_t *host_client_save = host_client;
2922 Cmd_ExecuteString(&cmd_server, s, src_command, true);
2923 host_client = host_client_save;
2924 // in case it is a command that changes host_client (like restart)
2928 Con_Rcon_Redirect_End();
2932 Con_Printf("server denied rcon access to %s\n", host_client ? host_client->name : addressstring2);
2936 static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *data, int length, lhnetaddress_t *peeraddress)
2938 int i, ret, clientnum, best;
2940 char *string, response[1400], addressstring2[128];
2941 static char stringbuf[16384]; // server only
2942 qboolean islocal = (LHNETADDRESS_GetAddressType(peeraddress) == LHNETADDRESSTYPE_LOOP);
2943 char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE];
2944 size_t sendlength, response_len;
2945 char infostringvalue[MAX_INPUTLINE];
2950 // convert the address to a string incase we need it
2951 LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
2953 // see if we can identify the sender as a local player
2954 // (this is necessary for rcon to send a reliable reply if the client is
2955 // actually on the server, not sending remotely)
2956 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
2957 if (host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
2959 if (i == svs.maxclients)
2962 if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
2964 // received a command string - strip off the packaging and put it
2965 // into our string buffer with NULL termination
2968 length = min(length, (int)sizeof(stringbuf) - 1);
2969 memcpy(stringbuf, data, length);
2970 stringbuf[length] = 0;
2973 if (developer_extra.integer)
2975 Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
2976 Com_HexDumpToConsole(data, length);
2979 sendlength = sizeof(senddata) - 4;
2980 switch(Crypto_ServerParsePacket(string, length, senddata+4, &sendlength, peeraddress))
2982 case CRYPTO_NOMATCH:
2988 memcpy(senddata, "\377\377\377\377", 4);
2989 NetConn_Write(mysocket, senddata, (int)sendlength+4, peeraddress);
2992 case CRYPTO_DISCARD:
2995 memcpy(senddata, "\377\377\377\377", 4);
2996 NetConn_Write(mysocket, senddata, (int)sendlength+4, peeraddress);
3000 case CRYPTO_REPLACE:
3001 string = senddata+4;
3002 length = (int)sendlength;
3006 if (length >= 12 && !memcmp(string, "getchallenge", 12) && (islocal || sv_public.integer > -3))
3008 for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++)
3010 if(challenges[i].time > 0)
3011 if (!LHNETADDRESS_Compare(peeraddress, &challenges[i].address))
3013 if (besttime > challenges[i].time)
3014 besttime = challenges[best = i].time;
3016 // if we did not find an exact match, choose the oldest and
3017 // update address and string
3018 if (i == MAX_CHALLENGES)
3021 challenges[i].address = *peeraddress;
3022 NetConn_BuildChallengeString(challenges[i].string, sizeof(challenges[i].string));
3026 // flood control: drop if requesting challenge too often
3027 if(challenges[i].time > realtime - net_challengefloodblockingtimeout.value)
3030 challenges[i].time = realtime;
3031 // send the challenge
3032 memcpy(response, "\377\377\377\377", 4);
3033 dpsnprintf(response+4, sizeof(response)-4, "challenge %s", challenges[i].string);
3034 response_len = strlen(response) + 1;
3035 Crypto_ServerAppendToChallenge(string, length, response, &response_len, sizeof(response));
3036 NetConn_Write(mysocket, response, (int)response_len, peeraddress);
3039 if (length > 8 && !memcmp(string, "connect\\", 8))
3043 crypto_t *crypto = Crypto_ServerGetInstance(peeraddress);
3047 if(crypto && crypto->authenticated)
3049 // no need to check challenge
3050 if(crypto_developer.integer)
3052 Con_Printf("%s connection to %s is being established: client is %s@%s%.*s, I am %.*s@%s%.*s\n",
3053 crypto->use_aes ? "Encrypted" : "Authenticated",
3055 crypto->client_idfp[0] ? crypto->client_idfp : "-",
3056 (crypto->client_issigned || !crypto->client_keyfp[0]) ? "" : "~",
3057 crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-",
3058 crypto_keyfp_recommended_length, crypto->server_idfp[0] ? crypto->server_idfp : "-",
3059 (crypto->server_issigned || !crypto->server_keyfp[0]) ? "" : "~",
3060 crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-"
3066 if ((s = InfoString_GetValue(string, "challenge", infostringvalue, sizeof(infostringvalue))))
3068 // validate the challenge
3069 for (i = 0;i < MAX_CHALLENGES;i++)
3070 if(challenges[i].time > 0)
3071 if (!LHNETADDRESS_Compare(peeraddress, &challenges[i].address) && !strcmp(challenges[i].string, s))
3073 // if the challenge is not recognized, drop the packet
3074 if (i == MAX_CHALLENGES)
3079 if((s = InfoString_GetValue(string, "message", infostringvalue, sizeof(infostringvalue))))
3080 Con_DPrintf("Connecting client %s sent us the message: %s\n", addressstring2, s);
3082 if(!(islocal || sv_public.integer > -2))
3084 if (developer_extra.integer)
3085 Con_Printf("Datagram_ParseConnectionless: sending \"reject %s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
3086 memcpy(response, "\377\377\377\377", 4);
3087 dpsnprintf(response+4, sizeof(response)-4, "reject %s", sv_public_rejectreason.string);
3088 NetConn_WriteString(mysocket, response, peeraddress);
3092 // check engine protocol
3093 if(!(s = InfoString_GetValue(string, "protocol", infostringvalue, sizeof(infostringvalue))) || strcmp(s, "darkplaces 3"))
3095 if (developer_extra.integer)
3096 Con_Printf("Datagram_ParseConnectionless: sending \"reject Wrong game protocol.\" to %s.\n", addressstring2);
3097 NetConn_WriteString(mysocket, "\377\377\377\377reject Wrong game protocol.", peeraddress);
3101 // see if this is a duplicate connection request or a disconnected
3102 // client who is rejoining to the same client slot
3103 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3105 if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0)
3107 // this is a known client...
3108 if(crypto && crypto->authenticated)
3110 // reject if changing key!
3111 if(client->netconnection->crypto.authenticated)
3114 strcmp(client->netconnection->crypto.client_idfp, crypto->client_idfp)
3116 strcmp(client->netconnection->crypto.server_idfp, crypto->server_idfp)
3118 strcmp(client->netconnection->crypto.client_keyfp, crypto->client_keyfp)
3120 strcmp(client->netconnection->crypto.server_keyfp, crypto->server_keyfp)
3123 if (developer_extra.integer)
3124 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to change key of crypto.\" to %s.\n", addressstring2);
3125 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to change key of crypto.", peeraddress);
3132 // reject if downgrading!
3133 if(client->netconnection->crypto.authenticated)
3135 if (developer_extra.integer)
3136 Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to downgrade crypto.\" to %s.\n", addressstring2);
3137 NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to downgrade crypto.", peeraddress);
3143 // client crashed and is coming back,
3144 // keep their stuff intact
3145 if (developer_extra.integer)
3146 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2);
3147 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
3148 if(crypto && crypto->authenticated)
3149 Crypto_FinishInstance(&client->netconnection->crypto, crypto);
3150 SV_SendServerinfo(client);
3154 // client is still trying to connect,
3155 // so we send a duplicate reply
3156 if (developer_extra.integer)
3157 Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2);
3158 if(crypto && crypto->authenticated)
3159 Crypto_FinishInstance(&client->netconnection->crypto, crypto);
3160 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
3166 if (NetConn_PreventFlood(peeraddress, sv.connectfloodaddresses, sizeof(sv.connectfloodaddresses) / sizeof(sv.connectfloodaddresses[0]), net_connectfloodblockingtimeout.value, true))
3169 // find an empty client slot for this new client
3170 for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
3173 if (!client->active && (conn = NetConn_Open(mysocket, peeraddress)))
3175 // allocated connection
3176 if (developer_extra.integer)
3177 Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address);
3178 NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress);
3179 // now set up the client
3180 if(crypto && crypto->authenticated)
3181 Crypto_FinishInstance(&conn->crypto, crypto);
3182 SV_ConnectClient(clientnum, conn);
3183 NetConn_Heartbeat(1);
3188 // no empty slots found - server is full
3189 if (developer_extra.integer)
3190 Con_Printf("Datagram_ParseConnectionless: sending \"reject Server is full.\" to %s.\n", addressstring2);
3191 NetConn_WriteString(mysocket, "\377\377\377\377reject Server is full.", peeraddress);
3195 if (length >= 7 && !memcmp(string, "getinfo", 7) && (islocal || sv_public.integer > -1))
3197 const char *challenge = NULL;
3199 if (NetConn_PreventFlood(peeraddress, sv.getstatusfloodaddresses, sizeof(sv.getstatusfloodaddresses) / sizeof(sv.getstatusfloodaddresses[0]), net_getstatusfloodblockingtimeout.value, false))
3202 // If there was a challenge in the getinfo message
3203 if (length > 8 && string[7] == ' ')
3204 challenge = string + 8;
3206 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), false))
3208 if (developer_extra.integer)
3209 Con_DPrintf("Sending reply to master %s - %s\n", addressstring2, response);
3210 NetConn_WriteString(mysocket, response, peeraddress);
3214 if (length >= 9 && !memcmp(string, "getstatus", 9) && (islocal || sv_public.integer > -1))
3216 const char *challenge = NULL;
3218 if (NetConn_PreventFlood(peeraddress, sv.getstatusfloodaddresses, sizeof(sv.getstatusfloodaddresses) / sizeof(sv.getstatusfloodaddresses[0]), net_getstatusfloodblockingtimeout.value, false))
3221 // If there was a challenge in the getinfo message
3222 if (length > 10 && string[9] == ' ')
3223 challenge = string + 10;
3225 if (NetConn_BuildStatusResponse(challenge, response, sizeof(response), true))
3227 if (developer_extra.integer)
3228 Con_DPrintf("Sending reply to client %s - %s\n", addressstring2, response);
3229 NetConn_WriteString(mysocket, response, peeraddress);
3233 if (length >= 37 && !memcmp(string, "srcon HMAC-MD4 TIME ", 20))
3235 char *password = string + 20;
3236 char *timeval = string + 37;
3237 char *s = strchr(timeval, ' ');
3238 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3239 const char *userlevel;
3241 if(rcon_secure.integer > 1)
3245 return true; // invalid packet
3248 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_time_matching, timeval, endpos - timeval - 1); // not including the appended \0 into the HMAC
3249 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3252 if (length >= 42 && !memcmp(string, "srcon HMAC-MD4 CHALLENGE ", 25))
3254 char *password = string + 25;
3255 char *challenge = string + 42;
3256 char *s = strchr(challenge, ' ');
3257 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3258 const char *userlevel;
3260 return true; // invalid packet
3263 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_challenge_matching, challenge, endpos - challenge - 1); // not including the appended \0 into the HMAC
3264 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3267 if (length >= 5 && !memcmp(string, "rcon ", 5))
3270 char *s = string + 5;
3271 char *endpos = string + length + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3274 if(rcon_secure.integer > 0)
3277 for (j = 0;!ISWHITESPACE(*s);s++)
3278 if (j < (int)sizeof(password) - 1)
3280 if(ISWHITESPACE(*s) && s != endpos) // skip leading ugly space
3283 if (!ISWHITESPACE(password[0]))
3285 const char *userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3286 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false);
3290 if (!strncmp(string, "extResponse ", 12))
3292 ++sv_net_extresponse_count;
3293 if(sv_net_extresponse_count > NET_EXTRESPONSE_MAX)
3294 sv_net_extresponse_count = NET_EXTRESPONSE_MAX;
3295 sv_net_extresponse_last = (sv_net_extresponse_last + 1) % NET_EXTRESPONSE_MAX;
3296 dpsnprintf(sv_net_extresponse[sv_net_extresponse_last], sizeof(sv_net_extresponse[sv_net_extresponse_last]), "'%s' %s", addressstring2, string + 12);
3299 if (!strncmp(string, "ping", 4))
3301 if (developer_extra.integer)
3302 Con_DPrintf("Received ping from %s, sending ack\n", addressstring2);
3303 NetConn_WriteString(mysocket, "\377\377\377\377ack", peeraddress);
3306 if (!strncmp(string, "ack", 3))
3308 // we may not have liked the packet, but it was a command packet, so
3309 // we're done processing this packet now
3312 // netquake control packets, supported for compatibility only, and only
3313 // when running game protocols that are normally served via this connection
3315 // (this protects more modern protocols against being used for
3316 // Quake packet flood Denial Of Service attacks)
3317 if (length >= 5 && (i = BuffBigLong(data)) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3 || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3) && !ENCRYPTION_REQUIRED)
3321 const char *protocolname;
3322 client_t *knownclient;
3323 client_t *newclient;
3326 SZ_Clear(&sv_message);
3327 SZ_Write(&sv_message, data, length);
3328 MSG_BeginReading(&sv_message);
3329 c = MSG_ReadByte(&sv_message);
3333 if (developer_extra.integer)
3334 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
3335 if(!(islocal || sv_public.integer > -2))
3337 if (developer_extra.integer)
3338 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"%s\" to %s.\n", sv_public_rejectreason.string, addressstring2);
3339 SZ_Clear(&sv_message);
3340 // save space for the header, filled in later
3341 MSG_WriteLong(&sv_message, 0);
3342 MSG_WriteByte(&sv_message, CCREP_REJECT);
3343 MSG_WriteUnterminatedString(&sv_message, sv_public_rejectreason.string);
3344 MSG_WriteString(&sv_message, "\n");
3345 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3346 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3347 SZ_Clear(&sv_message);
3351 protocolname = MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring));
3352 protocolnumber = MSG_ReadByte(&sv_message);
3353 if (strcmp(protocolname, "QUAKE") || protocolnumber != NET_PROTOCOL_VERSION)
3355 if (developer_extra.integer)
3356 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
3357 SZ_Clear(&sv_message);
3358 // save space for the header, filled in later
3359 MSG_WriteLong(&sv_message, 0);
3360 MSG_WriteByte(&sv_message, CCREP_REJECT);
3361 MSG_WriteString(&sv_message, "Incompatible version.\n");
3362 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3363 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3364 SZ_Clear(&sv_message);
3368 // see if this connect request comes from a known client
3369 for (clientnum = 0, knownclient = svs.clients;clientnum < svs.maxclients;clientnum++, knownclient++)
3371 if (knownclient->netconnection && LHNETADDRESS_Compare(peeraddress, &knownclient->netconnection->peeraddress) == 0)
3373 // this is either a duplicate connection request
3374 // or coming back from a timeout
3375 // (if so, keep their stuff intact)
3377 crypto_t *crypto = Crypto_ServerGetInstance(peeraddress);
3378 if((crypto && crypto->authenticated) || knownclient->netconnection->crypto.authenticated)
3380 if (developer_extra.integer)
3381 Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Attempt to downgrade crypto.\" to %s.\n", addressstring2);
3382 SZ_Clear(&sv_message);
3383 // save space for the header, filled in later
3384 MSG_WriteLong(&sv_message, 0);
3385 MSG_WriteByte(&sv_message, CCREP_REJECT);
3386 MSG_WriteString(&sv_message, "Attempt to downgrade crypto.\n");
3387 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3388 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3389 SZ_Clear(&sv_message);
3394 if (developer_extra.integer)
3395 Con_DPrintf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
3396 SZ_Clear(&sv_message);
3397 // save space for the header, filled in later
3398 MSG_WriteLong(&sv_message, 0);
3399 MSG_WriteByte(&sv_message, CCREP_ACCEPT);
3400 MSG_WriteLong(&sv_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(knownclient->netconnection->mysocket)));
3401 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3402 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3403 SZ_Clear(&sv_message);
3405 // if client is already spawned, re-send the
3406 // serverinfo message as they'll need it to play
3407 if (knownclient->begun)
3408 SV_SendServerinfo(knownclient);
3413 // this is a new client, check for connection flood
3414 if (NetConn_PreventFlood(peeraddress, sv.connectfloodaddresses, sizeof(sv.connectfloodaddresses) / sizeof(sv.connectfloodaddresses[0]), net_connectfloodblockingtimeout.value, true))
3417 // find a slot for the new client
3418 for (clientnum = 0, newclient = svs.clients;clientnum < svs.maxclients;clientnum++, newclient++)
3421 if (!newclient->active && (newclient->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
3423 // connect to the client
3424 // everything is allocated, just fill in the details
3425 strlcpy (conn->address, addressstring2, sizeof (conn->address));
3426 if (developer_extra.integer)
3427 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
3428 // send back the info about the server connection
3429 SZ_Clear(&sv_message);
3430 // save space for the header, filled in later
3431 MSG_WriteLong(&sv_message, 0);
3432 MSG_WriteByte(&sv_message, CCREP_ACCEPT);
3433 MSG_WriteLong(&sv_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
3434 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3435 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3436 SZ_Clear(&sv_message);
3437 // now set up the client struct
3438 SV_ConnectClient(clientnum, conn);
3439 NetConn_Heartbeat(1);
3444 if (developer_extra.integer)
3445 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
3446 // no room; try to let player know
3447 SZ_Clear(&sv_message);
3448 // save space for the header, filled in later
3449 MSG_WriteLong(&sv_message, 0);
3450 MSG_WriteByte(&sv_message, CCREP_REJECT);
3451 MSG_WriteString(&sv_message, "Server is full.\n");
3452 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3453 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3454 SZ_Clear(&sv_message);
3456 case CCREQ_SERVER_INFO:
3457 if (developer_extra.integer)
3458 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
3459 if(!(islocal || sv_public.integer > -1))
3462 if (NetConn_PreventFlood(peeraddress, sv.getstatusfloodaddresses, sizeof(sv.getstatusfloodaddresses) / sizeof(sv.getstatusfloodaddresses[0]), net_getstatusfloodblockingtimeout.value, false))
3465 if (sv.active && !strcmp(MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring)), "QUAKE"))
3468 char myaddressstring[128];
3469 if (developer_extra.integer)
3470 Con_DPrintf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
3471 SZ_Clear(&sv_message);
3472 // save space for the header, filled in later
3473 MSG_WriteLong(&sv_message, 0);
3474 MSG_WriteByte(&sv_message, CCREP_SERVER_INFO);
3475 LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), myaddressstring, sizeof(myaddressstring), true);
3476 MSG_WriteString(&sv_message, myaddressstring);
3477 MSG_WriteString(&sv_message, hostname.string);
3478 MSG_WriteString(&sv_message, sv.name);
3479 // How many clients are there?
3480 for (i = 0, numclients = 0;i < svs.maxclients;i++)
3481 if (svs.clients[i].active)
3483 MSG_WriteByte(&sv_message, numclients);
3484 MSG_WriteByte(&sv_message, svs.maxclients);
3485 MSG_WriteByte(&sv_message, NET_PROTOCOL_VERSION);
3486 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3487 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3488 SZ_Clear(&sv_message);
3491 case CCREQ_PLAYER_INFO:
3492 if (developer_extra.integer)
3493 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
3494 if(!(islocal || sv_public.integer > -1))
3497 if (NetConn_PreventFlood(peeraddress, sv.getstatusfloodaddresses, sizeof(sv.getstatusfloodaddresses) / sizeof(sv.getstatusfloodaddresses[0]), net_getstatusfloodblockingtimeout.value, false))
3502 int playerNumber, activeNumber, clientNumber;
3505 playerNumber = MSG_ReadByte(&sv_message);
3507 for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
3508 if (client->active && ++activeNumber == playerNumber)
3510 if (clientNumber != svs.maxclients)
3512 SZ_Clear(&sv_message);
3513 // save space for the header, filled in later
3514 MSG_WriteLong(&sv_message, 0);
3515 MSG_WriteByte(&sv_message, CCREP_PLAYER_INFO);
3516 MSG_WriteByte(&sv_message, playerNumber);
3517 MSG_WriteString(&sv_message, client->name);
3518 MSG_WriteLong(&sv_message, client->colors);
3519 MSG_WriteLong(&sv_message, client->frags);
3520 MSG_WriteLong(&sv_message, (int)(realtime - client->connecttime));
3521 if(sv_status_privacy.integer)
3522 MSG_WriteString(&sv_message, client->netconnection ? "hidden" : "botclient");
3524 MSG_WriteString(&sv_message, client->netconnection ? client->netconnection->address : "botclient");
3525 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3526 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3527 SZ_Clear(&sv_message);
3531 case CCREQ_RULE_INFO:
3532 if (developer_extra.integer)
3533 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
3534 if(!(islocal || sv_public.integer > -1))
3537 // no flood check here, as it only returns one cvar for one cvar and clients may iterate quickly
3544 // find the search start location
3545 prevCvarName = MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring));
3546 var = Cvar_FindVarAfter(&cvars_all, prevCvarName, CVAR_NOTIFY);
3548 // send the response
3549 SZ_Clear(&sv_message);
3550 // save space for the header, filled in later
3551 MSG_WriteLong(&sv_message, 0);
3552 MSG_WriteByte(&sv_message, CCREP_RULE_INFO);
3555 MSG_WriteString(&sv_message, var->name);
3556 MSG_WriteString(&sv_message, var->string);
3558 StoreBigLong(sv_message.data, NETFLAG_CTL | (sv_message.cursize & NETFLAG_LENGTH_MASK));
3559 NetConn_Write(mysocket, sv_message.data, sv_message.cursize, peeraddress);
3560 SZ_Clear(&sv_message);
3564 if (developer_extra.integer)
3565 Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RCON from %s.\n", addressstring2);
3566 if (sv.active && !rcon_secure.integer)
3568 char password[2048];
3572 const char *userlevel;
3573 strlcpy(password, MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring)), sizeof(password));
3574 strlcpy(cmd, MSG_ReadString(&sv_message, sv_readstring, sizeof(sv_readstring)), sizeof(cmd));
3576 endpos = cmd + strlen(cmd) + 1; // one behind the NUL, so adding strlen+1 will eventually reach it
3577 userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0);
3578 RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, true);
3585 SZ_Clear(&sv_message);
3586 // we may not have liked the packet, but it was a valid control
3587 // packet, so we're done processing this packet now
3592 if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length, sv.protocol, host_client->begun ? net_messagetimeout.value : net_connecttimeout.value)) == 2)
3594 SV_ReadClientMessage();
3601 void NetConn_ServerFrame(void)
3604 lhnetaddress_t peeraddress;
3605 unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE];
3606 for (i = 0;i < sv_numsockets;i++)
3607 while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
3608 NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
3609 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
3611 // never timeout loopback connections
3612 if (host_client->netconnection && realtime > host_client->netconnection->timeout && LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP)
3614 Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
3615 SV_DropClient(false);
3620 void NetConn_SleepMicroseconds(int microseconds)
3622 LHNET_SleepUntilPacket_Microseconds(microseconds);
3626 void NetConn_QueryMasters(qboolean querydp, qboolean queryqw)
3630 lhnetaddress_t masteraddress;
3631 lhnetaddress_t broadcastaddress;
3634 if (serverlist_cachecount >= SERVERLIST_TOTALSIZE)
3637 // 26000 is the default quake server port, servers on other ports will not
3639 // note this is IPv4-only, I doubt there are IPv6-only LANs out there
3640 LHNETADDRESS_FromString(&broadcastaddress, "255.255.255.255", 26000);
3644 for (i = 0;i < cl_numsockets;i++)
3648 const char *cmdname, *extraoptions;
3649 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3651 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3653 // search LAN for Quake servers
3654 SZ_Clear(&cl_message);
3655 // save space for the header, filled in later
3656 MSG_WriteLong(&cl_message, 0);
3657 MSG_WriteByte(&cl_message, CCREQ_SERVER_INFO);
3658 MSG_WriteString(&cl_message, "QUAKE");
3659 MSG_WriteByte(&cl_message, NET_PROTOCOL_VERSION);
3660 StoreBigLong(cl_message.data, NETFLAG_CTL | (cl_message.cursize & NETFLAG_LENGTH_MASK));
3661 NetConn_Write(cl_sockets[i], cl_message.data, cl_message.cursize, &broadcastaddress);
3662 SZ_Clear(&cl_message);
3664 // search LAN for DarkPlaces servers
3665 NetConn_WriteString(cl_sockets[i], "\377\377\377\377getstatus", &broadcastaddress);
3668 // build the getservers message to send to the dpmaster master servers
3669 if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == LHNETADDRESSTYPE_INET6)
3671 cmdname = "getserversExt";
3672 extraoptions = " ipv4 ipv6"; // ask for IPv4 and IPv6 servers
3676 cmdname = "getservers";
3679 memcpy(request, "\377\377\377\377", 4);
3680 dpsnprintf(request+4, sizeof(request)-4, "%s %s %u empty full%s", cmdname, gamenetworkfiltername, NET_PROTOCOL_VERSION, extraoptions);
3683 for (masternum = 0;sv_masters[masternum].name;masternum++)
3685 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == af)
3688 NetConn_WriteString(cl_sockets[i], request, &masteraddress);
3692 // search favorite servers
3693 for(j = 0; j < nFavorites; ++j)
3695 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3697 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3698 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_DARKPLACES7, request, true );
3705 // only query QuakeWorld servers when the user wants to
3708 for (i = 0;i < cl_numsockets;i++)
3712 int af = LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i]));
3714 if(LHNETADDRESS_GetAddressType(&broadcastaddress) == af)
3716 // search LAN for QuakeWorld servers
3717 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &broadcastaddress);
3719 // build the getservers message to send to the qwmaster master servers
3720 // note this has no -1 prefix, and the trailing nul byte is sent
3721 dpsnprintf(request, sizeof(request), "c\n");
3725 for (masternum = 0;sv_qwmasters[masternum].name;masternum++)
3727 if (sv_qwmasters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_qwmasters[masternum].string, QWMASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
3729 if (m_state != m_slist)
3731 char lookupstring[128];
3732 LHNETADDRESS_ToString(&masteraddress, lookupstring, sizeof(lookupstring), true);
3733 Con_Printf("Querying master %s (resolved from %s)\n", lookupstring, sv_qwmasters[masternum].string);
3736 NetConn_Write(cl_sockets[i], request, (int)strlen(request) + 1, &masteraddress);
3740 // search favorite servers
3741 for(j = 0; j < nFavorites; ++j)
3743 if(LHNETADDRESS_GetAddressType(&favorites[j]) == af)
3745 if(LHNETADDRESS_ToString(&favorites[j], request, sizeof(request), true))
3747 NetConn_WriteString(cl_sockets[i], "\377\377\377\377status\n", &favorites[j]);
3748 NetConn_ClientParsePacket_ServerList_PrepareQuery( PROTOCOL_QUAKEWORLD, request, true );
3755 if (!masterquerycount)
3757 Con_Print("Unable to query master servers, no suitable network sockets active.\n");
3758 M_Update_Return_Reason("No network");
3763 void NetConn_Heartbeat(int priority)
3765 lhnetaddress_t masteraddress;
3767 lhnetsocket_t *mysocket;
3769 // if it's a state change (client connected), limit next heartbeat to no
3770 // more than 30 sec in the future
3771 if (priority == 1 && nextheartbeattime > realtime + 30.0)
3772 nextheartbeattime = realtime + 30.0;
3774 // limit heartbeatperiod to 30 to 270 second range,
3775 // lower limit is to avoid abusing master servers with excess traffic,
3776 // upper limit is to avoid timing out on the master server (which uses
3778 if (sv_heartbeatperiod.value < 30)
3779 Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
3780 if (sv_heartbeatperiod.value > 270)
3781 Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
3783 // make advertising optional and don't advertise singleplayer games, and
3784 // only send a heartbeat as often as the admin wants
3785 if (sv.active && sv_public.integer > 0 && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
3787 nextheartbeattime = realtime + sv_heartbeatperiod.value;
3788 for (masternum = 0;sv_masters[masternum].name;masternum++)
3789 if (sv_masters[masternum].string && sv_masters[masternum].string[0] && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, DPMASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
3790 NetConn_WriteString(mysocket, "\377\377\377\377heartbeat DarkPlaces\x0A", &masteraddress);
3794 static void Net_Heartbeat_f(cmd_state_t *cmd)
3797 NetConn_Heartbeat(2);
3799 Con_Print("No server running, can not heartbeat to master server.\n");
3802 static void PrintStats(netconn_t *conn)
3804 if ((cls.state == ca_connected && cls.protocol == PROTOCOL_QUAKEWORLD) || (sv.active && sv.protocol == PROTOCOL_QUAKEWORLD))
3805 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->outgoing_unreliable_sequence, conn->qw.incoming_sequence);
3807 Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, !conn->sendMessageLength, conn->nq.sendSequence, conn->nq.receiveSequence);
3808 Con_Printf("unreliable messages sent = %i\n", conn->unreliableMessagesSent);
3809 Con_Printf("unreliable messages recv = %i\n", conn->unreliableMessagesReceived);
3810 Con_Printf("reliable messages sent = %i\n", conn->reliableMessagesSent);
3811 Con_Printf("reliable messages received = %i\n", conn->reliableMessagesReceived);
3812 Con_Printf("packetsSent = %i\n", conn->packetsSent);
3813 Con_Printf("packetsReSent = %i\n", conn->packetsReSent);
3814 Con_Printf("packetsReceived = %i\n", conn->packetsReceived);
3815 Con_Printf("receivedDuplicateCount = %i\n", conn->receivedDuplicateCount);
3816 Con_Printf("droppedDatagrams = %i\n", conn->droppedDatagrams);
3819 void Net_Stats_f(cmd_state_t *cmd)
3822 Con_Print("connections =\n");
3823 for (conn = netconn_list;conn;conn = conn->next)
3828 void Net_Refresh_f(cmd_state_t *cmd)
3830 if (m_state != m_slist) {
3831 Con_Print("Sending new requests to master servers\n");
3832 ServerList_QueryList(false, true, false, true);
3833 Con_Print("Listening for replies...\n");
3835 ServerList_QueryList(false, true, false, false);
3838 void Net_Slist_f(cmd_state_t *cmd)
3840 ServerList_ResetMasks();
3841 serverlist_sortbyfield = SLIF_PING;
3842 serverlist_sortflags = 0;
3843 if (m_state != m_slist) {
3844 Con_Print("Sending requests to master servers\n");
3845 ServerList_QueryList(true, true, false, true);
3846 Con_Print("Listening for replies...\n");
3848 ServerList_QueryList(true, true, false, false);
3851 void Net_SlistQW_f(cmd_state_t *cmd)
3853 ServerList_ResetMasks();
3854 serverlist_sortbyfield = SLIF_PING;
3855 serverlist_sortflags = 0;
3856 if (m_state != m_slist) {
3857 Con_Print("Sending requests to master servers\n");
3858 ServerList_QueryList(true, false, true, true);
3859 serverlist_consoleoutput = true;
3860 Con_Print("Listening for replies...\n");
3862 ServerList_QueryList(true, false, true, false);
3866 void NetConn_Init(void)
3869 lhnetaddress_t tempaddress;
3870 netconn_mempool = Mem_AllocPool("network connections", 0, NULL);
3871 Cmd_AddCommand(&cmd_client, "net_stats", Net_Stats_f, "print network statistics");
3872 Cmd_AddCommand(&cmd_server, "net_stats", Net_Stats_f, "print network statistics");
3874 Cmd_AddCommand(&cmd_client, "net_slist", Net_Slist_f, "query dp master servers and print all server information");
3875 Cmd_AddCommand(&cmd_client, "net_slistqw", Net_SlistQW_f, "query qw master servers and print all server information");
3876 Cmd_AddCommand(&cmd_client, "net_refresh", Net_Refresh_f, "query dp master servers and refresh all server information");
3878 Cmd_AddCommand(&cmd_server, "heartbeat", Net_Heartbeat_f, "send a heartbeat to the master server (updates your server information)");
3879 Cvar_RegisterVariable(&net_test);
3880 Cvar_RegisterVariable(&net_usesizelimit);
3881 Cvar_RegisterVariable(&net_burstreserve);
3882 Cvar_RegisterVariable(&rcon_restricted_password);
3883 Cvar_RegisterVariable(&rcon_restricted_commands);
3884 Cvar_RegisterVariable(&rcon_secure_maxdiff);
3885 Cvar_RegisterVariable(&net_slist_queriespersecond);
3886 Cvar_RegisterVariable(&net_slist_queriesperframe);
3887 Cvar_RegisterVariable(&net_slist_timeout);
3888 Cvar_RegisterVariable(&net_slist_maxtries);
3889 Cvar_RegisterVariable(&net_slist_favorites);
3890 Cvar_RegisterVariable(&net_slist_pause);
3891 if(LHNET_DefaultDSCP(-1) >= 0) // register cvar only if supported
3892 Cvar_RegisterVariable(&net_tos_dscp);
3893 Cvar_RegisterVariable(&net_messagetimeout);
3894 Cvar_RegisterVariable(&net_connecttimeout);
3895 Cvar_RegisterVariable(&net_connectfloodblockingtimeout);
3896 Cvar_RegisterVariable(&net_challengefloodblockingtimeout);
3897 Cvar_RegisterVariable(&net_getstatusfloodblockingtimeout);
3898 Cvar_RegisterVariable(&net_sourceaddresscheck);
3899 Cvar_RegisterVariable(&cl_netlocalping);
3900 Cvar_RegisterVariable(&cl_netpacketloss_send);
3901 Cvar_RegisterVariable(&cl_netpacketloss_receive);
3902 Cvar_RegisterVariable(&hostname);
3903 Cvar_RegisterVariable(&developer_networking);
3904 Cvar_RegisterVariable(&cl_netport);
3905 Cvar_RegisterVariable(&sv_netport);
3906 Cvar_RegisterVariable(&net_address);
3907 Cvar_RegisterVariable(&net_address_ipv6);
3908 Cvar_RegisterVariable(&sv_public);
3909 Cvar_RegisterVariable(&sv_public_rejectreason);
3910 Cvar_RegisterVariable(&sv_heartbeatperiod);
3911 for (i = 0;sv_masters[i].name;i++)
3912 Cvar_RegisterVariable(&sv_masters[i]);
3913 Cvar_RegisterVariable(&gameversion);
3914 Cvar_RegisterVariable(&gameversion_min);
3915 Cvar_RegisterVariable(&gameversion_max);
3916 // COMMANDLINEOPTION: Server: -ip <ipaddress> sets the ip address of this machine for purposes of networking (default 0.0.0.0 also known as INADDR_ANY), use only if you have multiple network adapters and need to choose one specifically.
3917 if ((i = COM_CheckParm("-ip")) && i + 1 < com_argc)
3919 if (LHNETADDRESS_FromString(&tempaddress, com_argv[i + 1], 0) == 1)
3921 Con_Printf("-ip option used, setting net_address to \"%s\"\n", com_argv[i + 1]);
3922 Cvar_SetQuick(&net_address, com_argv[i + 1]);
3925 Con_Printf("-ip option used, but unable to parse the address \"%s\"\n", com_argv[i + 1]);
3927 // COMMANDLINEOPTION: Server: -port <portnumber> sets the port to use for a server (default 26000, the same port as QUAKE itself), useful if you host multiple servers on your machine
3928 if (((i = COM_CheckParm("-port")) || (i = COM_CheckParm("-ipport")) || (i = COM_CheckParm("-udpport"))) && i + 1 < com_argc)
3930 i = atoi(com_argv[i + 1]);
3931 if (i >= 0 && i < 65536)
3933 Con_Printf("-port option used, setting port cvar to %i\n", i);
3934 Cvar_SetValueQuick(&sv_netport, i);
3937 Con_Printf("-port option used, but %i is not a valid port number\n", i);
3941 cl_message.data = cl_message_buf;
3942 cl_message.maxsize = sizeof(cl_message_buf);
3943 cl_message.cursize = 0;
3944 sv_message.data = sv_message_buf;
3945 sv_message.maxsize = sizeof(sv_message_buf);
3946 sv_message.cursize = 0;
3948 if (Thread_HasThreads())
3949 netconn_mutex = Thread_CreateMutex();
3952 void NetConn_Shutdown(void)
3954 NetConn_CloseClientPorts();
3955 NetConn_CloseServerPorts();
3958 Thread_DestroyMutex(netconn_mutex);
3959 netconn_mutex = NULL;